Sorry this lengthy

Been bloated for about 2 months with enlarged stomach I look like I'm pregnant which I'm not. I have gotten blood, urine exams which my doctors say is normal. I had an ultrasound and transvaginal ultrasound all came back normal. I'm frustrated I have extreme fatigue and having pain especially on my lower right side of my stomach. I have missed my period twice already and have lower back pain constantly. I have lost my appetite and feel full with just having a small snack. I have gotten a new symptom now where I constantly need to pee. Has anyone gone through this. I'm not sure what's happening and neither do the doctors