TTC rainbow baby

So, I had irregular periods for years, told I would never get pregnant. I'm 39, I'll be 40 in July. Well in end of oct into November I was like ok what the hell is wrong with me. I was dizzy and nauseated and had cramps.. never thought maybe I could be Prego. Well I was .. thanksgiving that month I found out we lost the baby.. I thought I was going to die... Well fast forward to now .. while I normally have sore bbs and cramping and bloating before AF, I have had ZERO of that... I get a little dizzy from time to time which makes me feel a little nauseated... My boobs are very itchy, not the nipple just the boob and I've got diarrhea... AF is due tomorrow... Has anybody else experienced this and gotten a BFP?