girl's wearing for graduation at 8th grade

Almost 5 months ago I had a baby by c section now I have a lump middle ways of my right side I read it could just be my muscles separated or a hernia and it does feel like it's getting a little bigger and every time I eat I feel sick and my period did get normal and now it's been crazy last few months and comes late and I cramp 5 days before and haven't bleed much and I have took a couple of test they come out negative I don't know what is wrong with me and I don't have no money or insurance to go to doctor has anyone had this happen or anything like it I hate feeling like this I don't and can't eat much cause of feeling sick after every time and keep gaining weight girl's wearing for graduation at 8th grade