Ttc baby number 1

[Dogmom123]

Hello everyone this is the first month my husband and I have been ttc. My last cycle ended 9/22 and according to my ovulation calendar I was supposed to ovulate 9/30 we had sex on 9/29 and then again 2 weeks after my last period because I thought that's when you ovulate. Anyhow on 10/9 I had lower back cramps sort of like my period but they were on the right side they lasted like 2 days off and on and my breasts are sore and I swear a little purple looking. I thought maybe I was just a little crazy so I checked my cervix and it's high and firm. I hope I'm pregnant. I have pcos but have had relatively normal periods for a couple of years. Any ideas on the pain I described could it be implantation ? My next period is due 10/15 since I have about a 25-28 day period. Thank you in advanced!