I'm a 17 year old female and i've been noticing that I constantly have a sore lower abdomen, especially at night and in the morning. The only way I can describe it is it's like the organs in my body are constantly aching and they feel almost "worn out". I drink lots of water and have started drinking tea, and also I don't eat very much at all. I sometimes get an aching pain in my lower back aswell, and I'm really worried it could be something serious like Ovarian cancer. I suffer from anxiety quite badly, and stuff like this makes me panic. Should I be worried?