I have lower stomach fat even though I'm thin??

My understanding is you cannot spot reduce any one part of you. You do a lot of cardio, so if you want to show those abs a bit more, try lifting some heavier weights to build muscle. There are a lot of nice folks here that can give you fantastic lifting advice.

Definitely go low carb to get rid of the last of your fat. Look for ketogenic diets that bodybuilders use to get ripped before a contest. Not a long term solution, but it ought to shake up your metabolism. Eliminating starches, processed foods (if you can't wash it before you eat it, avoid) and sugars. Get rid of breads and pastas entirely, sweet potatoes instead of regular (and in very low amounts) more protein and more vegetables.

I workout 5 times a week and this is how my week would look:
Monday: 15 min. cardio + 30 min. full body strenght
Tuesday: 10 min. cardio + 35 min. abs and legs
Wednesday: Off
Thursday: 10 min. on the elliptical trainer + 25 min. of running (sometimes intervals)
Friday: 10 min. cardio + 35 min. abs and arms
Saturday: Off
Sunday: 5-8 kilometer run

I try to drink at least 1,5 L water a day
What can I do? Thanks

What does the "full body strength...abs and arms...abs and legs" consist of exactly?

I would say you're doing too much cardio and suggest you start lifting weights which will help shift the fat and build some muscle.

That's typically the last area you'll lose body fat so you'll need to build muscle to avoid losing weight.

You eat low protein, low fat, and you do too much cardio.

you're supposed to have fat there. and if your BMI is that low, then I think you're probably exaggerating the size of the fat in your mind. The human body is not supposed to be 0% body fat... 0% body fat is dead. Also, healthy amounts of body fat look good. You see yourself from the worst angle, i.e. looking down which makes stomach flab look bigger than it is.

What is your goal in terms of looks? Are you trying to look like airbrushed pictures of models? Even those models don't look like their pics, hence the reason why they were airbrushed. Even models have their little flabby bits here and there, you don't see them because they're airbrushed out of pictures.

Unfortunately the state of our society now is such that a lot of people think that any fat on the human body is too much and shouldn't be there.... well that's not the case. The healthy body fat percentage range for women is 18-28%. By all means have goals and there's nothing wrong with aesthetics being your main goal, so long as what you're aiming for is healthy (both physically and mentally) and achievable.

OP I'm betting you already look fantastic. If you're not happy with how you look, then doing a decent strength training programme to firm up your body is probably what you need, and probably gaining weight (i.e. lean mass) as well:. Check this out: http://www.nerdfitness.com/blog/2011/07/21/meet-staci-your-new-powerlifting-super-hero/

if you really do have a lot of fat (i.e. it's not just you exaggerating it in your mind) even though your BMI is so low, then you absolutely must build up your lean body mass for health reasons.

google 'fupa exercises' yes its called a fupa. no i didnt make it up

Thanks Bradley!!

That's where estrogen is stored, so it's perfectly normal to have it as a woman. The appearance/flatness of that area of the body has a lot to do with genetics.

Everyones bodies are different, however I know a girl that has a similar little pocket even though she has low body fat; Its just genetics and she has excepted that and looks/feels great. Whilst the last bits of stubborn fat will go for some people when their percentage body fat drops into the athletic range for others it wont.

I would say you have a couple of options 1) Increase protein and weights and become more shredded, this is will take dedication and you may need to be getting towards the abs of female body builder before it goes. 2)Except that you are in great shape, you eat and drink healthy and some fat is good for you (looks and health wise). Remember part of the reason our bodies have evolved to store fat in different places is due to mate selection and guys generally dont like girls with no body fat.

The last thing i would say is that if your BMI is underweight/near underweight don't reduce your calorie intake anymore, if anything increase it ! before asthetics the most important thing is your health. Dont be fooled into thinking very low body fat, hammering exercise and low calories is the key to longevity, chances are you will be putting you body under alot of stress, the key is balance.