Fed up

I'm only a few months into the road of ttc #2 and I'm getting mad. I feel like my body is deceiving me. Last month from shortly after I ovulated my nipples were killing me. Not as bad as they had in my first pregnancy but I figured I was going to get a bfp. Nope, shark week showed 2 days late. This month, I had a REALLY bad cramp 2 days after a confirmed positive opk, like having contractions/on the verge of blacking out pain. I went to the doctor thinking it was a bladder/uti infection. Nope, it was clear of all infection etc. Now I'm peeing every 3hrs, give or take. I don't want to get my hopes up again and get them crushed. ☹😢😭