Okay, so I'm a 17 year old female about to be 18 in a few weeks and for the past couple of days, anytime I eat, I feel sick. I feel like weak and I don't necessarily feel nauseous, my stomach just feels weird. I get really gassy. I burp and fart a lot lol. It could just be a piece of candy and I get the same reaction. I've been really tired or exhausted lately with a cough and stuffy nose and sore throat that comes and goes. I had a nose bleed yesterday that fell from the sky. I've been having a lot of discharge, more than usual. I don't know if this is all related or if my body is going through a crisis right now because I'm transitioning to a new age(the start of adult hood). I am sexually active. I also have a double heart condition and Vitamin D Deficiency. Any idea what's going on with me??