A year ago I started getting a weird rumbling sound in my lower left abdomen, it went from once a week to now about 3 times daily, I can feel it rumbling inside and outside of my body (if you put your hand the left side of my lower abdomen you can feel it). It makes a really loud noise that has been compared to rumbling pipes, it is so loud that I have been sent out of exams because of it. Recently I have started to have a lot of pain in the same place as the rumble. I have been to the doctors and hospital many times and they have told me to keep track of food I eat and see if there's any correlation to that and the pain/rumble (there has been no correlation). I have had blood tests and I seem healthy and don't have celiacs. Last night I came on to my period and when I woke up this morning it was so heavy, I was extremely bloated and had so much pain in the same place again, but this morning the pain was excruciating and I didn't know what to do. I started my period when I was only 10 and it hasn't been irregular up until about 6 months ago. It has been very painful all day and I've been wondering if it has anything to do with ovarian cancer? I am only 13 but I also have a very small appetite and become full up and bloated very easily (which are some of the symptoms). Help?