Where am I going wrong?

Are you sure you are being honest with yourself about your eating and drinking? I am terrible about justifying and lying to myself about portion size. Tracking my food through MFP has been ruly eye opening. Also what are your calories made of? Carbs are the devil for me and make me gain weight. I can eat the same amount in lean beef or chicken vs. bread and the bread will make me gain. The other element I didn't see in your exercise is weights. Change up your work out. Increase your water intake. Good luck. I know its frustrating.

I would suggest a juice fast? it takes some dedication and is pretty extreme, but itll flush your system, it should mix up your your routine and boost your weight loss! its also great for yoru digestive system and allows your body to repair itself.
Do some research and see if it is for you - hopefully it will help

Yeah. What they said.

Change your diet. It's not about the calories at this point, but the quality of the food. I'll bet you're eating the same things over and over and over.

Humans were meant to eat seasonal variety. Go hit the specialty markets and select some food you don't normally eat. Go for some different veggies--there's more to life than peas, corn and carrots. Try a tropical fruit you don't normally eat. Seek out the uncommon meats like goat or kangaroo, if you can get it. Lay your hands on some quinoa or rye.

I'm not saying change your diet forever, but give yourself a kick-start for a couple of weeks--just long enough for your body to respond. And allow yourself to go over your caloric intake on one or two days.

Indulge, enjoy and be happy. Your body will respond.

Do you know your TDEE? This is the measure of how much energy you are spending in a day.
http://www.fitnessfrog.com/calculators/tdee-calculator.html

Once you know your TDEE, to lose a lb a week, you'll subtract 500 and arrive at the figure which is the amount of calories you should be eating per day.

Yes, this is true. I eat the same thing for breakfast, lunch and dinner everyday (except on weekends where I might change my meals slightly). Breakfast is always shredded wheat or all bran, lunch is a wholemeal pitta bread and some shapers salted popcorn and dinner is homemade soup and a slice of dry brown toast. My snacks are a banana and an apple, and sometimes a yoghurt.

Maybe I'll try some different evening meals next week.

I have also just bought some acai berry supplements on the internet. Maybe this will help?

Honestly, my toddler eats double than the amount you eat! It's not healthy for an adult to be eating this little. There is literally NO fat in the menu you described and very little protein. You really need to start eating to kick your metabolism into high gear.

If you are only eating 1300 calories but burning a lot at the gym, your body isn't getting enough fuel and that is what can mess up your metabolism. Try eating the "calories remaining" that your summary tells you, your "net" calories should not go below 1200. This site calculates everything for you and so it makes it easy.

This guy explains the "extra" calories so well:
http://www.myfitnesspal.com/topics/show/173853-an-objective-look-at-eating-exercise-calories

I agree with the others - eat more! Don't you get bored stupid eating the same tHing every day. Food is fuel for your body but it is also meant to be an enjoyable part of life. There are so many wonderful foods out there for you to eat. So many tastey yet healthy options.

Adding protein powder worked for me- I have a healthy diet and am pretty active. I also had lost some but then stopped loosing- that worked for me. Good luck!

I can understand being nervous about adding calories. I can only speak to what has worked for me- I use about half the serving size of protein powder which adds about 55 calories to my day and have lost more in the last two weeks and in the last 6 months. It seems that protein must have been something my body was really needing to function better; who knows if you are the same. To that effect maybe it would be useful to look at your intake and see if there is something valuable you are missing. And back to the calories...55 that bring benefit are easy to make up somewhere else in my opinion. Good luck!

One more thing- this may also be just me...once I stopped measuring my food at each meal and thinking about the healthiest low cal thing I could eat for each meal and snack ahead of time... I also had more success. For me it seemed that being so fixated on it perhaps had me eating more than I needed and actually wanted because I was thinking about it ALL the time and not listening to my body. Just my experience.

I've also heard that the 2 key ingredients to kick starting your metabolism are fiber and lean protein.

I agree up your protein intake and cut some of those carbs. A protein drink made with half fruit juice half water has very few calories possibly around 100 and protein makes you feel fuller for longer.