Fad dieting to kick start weight loss

I used the cambridge diet plan

As to see a dietitian. Doctors have minimal nutritional training.

Also check this link out

http://www.myfitnesspal.com/topics/show/1175494-a-guide-to-get-you-started-on-your-path-to-sexypants?hl=guide+to+sexypants&page=1#posts-18361594

My Awesome sister has successfully maintained a 70 pound weight loss for the past four years. She kicked off with one of those books that told you to eat XYZ in week one, then ABC in week two, etc. I think it was like the four day diet, or the two week diet, or the 17 day diet.. something like that. When she first started she needed the structure and restrictions. She stayed with it for only a few months before transitioning to something more sensible and sustainable but it was enough to help her become aware of her eating and fully dedicate herself to her weight loss and fitness journey.

Unfortunately with my body patience doesn't seem to be doing a whole lot. I am actually doing the rest though

Your diary is private and only you know your stats, logging accuracy and calorie goal.....

To answer your question - no I don't believe in kickstarts (except for my 1977 Yamaha motorbike!).
I was fat for 20 years but when I properly started tracking my calories in and out I lost weight. Slowly and steadily and with a view to what was going to be sustainable after I got to my goal weight.
The way to start is is the way you intend to continue IMHO.

Unfortunately the least likely cause is that you are a medical marvel and can't lose weight.
The most likely cause is that you have been eating at maintenance for reasons that gypsyrunner gives.

Two options are:
1/ Don't change anything in your food / exercise logging routines but take 250 cals a day off your goal. That "should" give you half a pound a week loss so you would have to stick with it for a number of weeks to even out any bumps and dips caused by normal weight fluctuations.
2/ Make a fresh start. Weigh and measure absolutely everything you eat or drink. Try to calibrate your HRM as although 500 - 700 average exercise burns are possible that's a really serious amount of strenuous exercise (ten hours per week perhaps). HRMs aren't always accurate, just having a higher than average heart rate will throw it out.

Knowing your maintenance level is actually very useful so don't despair!

I have tried many of those fad diets (Atkins, South Beach, 17 day, Hormone Balance, etc, etc) and loved them AT FIRST because you lose a lot of weight in the first few weeks. The problem is that they are impossible to sustain, because they require a lot of shopping, prepping etc and also require cutting many thing out of your diet. When I stopped using those diets I gained back all the weight I lost, plus a few extra. I used to think that I couldn't lose weight by just eating "normally", but I've found that by being REALLY honest with the MFP food journal and making sure there is a deficit each day, I am losing weight. And I'm doing this by eating all the foods my family is eating, but mindfully and in moderation. Hopefully you will find what works for you too, but don't pin too much hope on any of those "diets".

Do you have any symptoms of a hormonal imbalance?

I'm not a fan of the Atkins diet, since everyone I know personally has regained the weight. But, for hormone issues, I'd definitely recommend decreasing your percentage of carbs (as in cut them in half) and increasing your good fat and protein for a while. That will give your body an opportunity to try to balance itself out, especially if you're already eating a clean diet.

I also found that my workouts need to be fairly intense (for me that meant a good sweat for 20-30 minutes). If you don't have a good heart rate monitor, then you might think about getting one, since MFP calculations can be pretty far off from the real thing.

Hopefully, that will give you a start. Oh, and I found that sometimes I have to increase my net calories as my metabolism improves in order to continue to lose weight.

Once you start losing and feeling better, then you can slowly add carbs back to your diet to reach a sustainable level.

So maybe you've got some thyroid issues. If not, you're overestimating your calorie burns or underestimating what you are eating. Play around with your numbers some. Tighten up on your weighing and measuring.

7 months is a long time to go with no loss. You are obviously eating at maintenance. Consider that your HRM may not be as accurate as you think - sometimes they are not. Drop your cals to 1500 or 1600 for a couple of weeks and see what happens.

This!!!
OP , if your only netting @1200 calories a day, then you should be losing weight. I would definitely tighten up on weighing and measuring your foods and see what happens.