Idk whats going on..

Well I'm 23. I had a baby almost a year ago. Well, lately I been very tired, moody, my back hurts, bad headaches, dizzy, feet some what hurting, pains to a level 3 of pain on my right side rib cage, my stomach is hard on top but squishy like a ball on the bottom. Well before my period came I took 2 pregnancy test and they came put as negative. So I wanted to wait to see if my period come or not. Well, it did it was 2 days early and it lasted 5 days usually its a 6 day cycle. I don't know what else to do. What is y'all suggestion ladies? I'm I pregnant or what's going on.