<s>[INST] Hello, sometimes I've been having this stabbing pain in my stomach area (left, my left). It comes and goes, I don't know what could be wrong? I've been always having trouble with appetite, I tend to eat irregularly, also have a mild valve regurgitation if that makes any difference. I've been diagnosed with PCOS and slight insulin resistance as well. I just turned twenty. [/INST] Hi.Thanks for your query.You just turned 20 and you have PCOS. This is one of the reasons and indication that your hormonal balance is getting disturbed giving other symptoms of trouble with appetite, eating irregularly. Fast foods cause more of PCOS.Mild valve regurgitation may not be associated with any of the symptoms you have mentioned. Stabbing pain in the left side of the abdomen at you age can be due to Colitis or IBS commonly seen at your age with PCOS. Another reason may be a kidney problem or ureteric stone.I would advise you the following:Ultrasonography for the kidneys and the ovaries.Colonoscopy for the colitisAll Hormone studies Stop junk foodsEat regularly at any cost.Get an opinion of your Gynecologist to get a proper treatment for PCOS Check blood sugar regularly </s>