My changing cycle

So I’ve been ttc since November. Still no success however every period I’ve had since then has been different. My flow has changed, I was late one month, my cramps have weakend, this month I spotted for a full day before I had my full blown period. If I spot it’s once or twice when I wipe and a very small amount. I kind of psych myself every month because some early pregnancy symptoms are my normal pms symptoms. But I’m kind of worried now because I started having pains similar to what I get when I’m about to ovulate a week after I ovulated. The pain comes and goes it’s not intolerable and three days into my period I’m getting them again.