12dpo still testing Negative

I’m 37 and my husband is 38. We decided to try again for baby 3. This go around we used PreSeed and an opk. Since around 3-4 dpo I’ve had cramping off and on. Headaches, backaches, sore nipples, breasts feels heavy, and I’ve been congested.

Today at 12dpo I tested and it was negative. Normally before my period I get a pimple. I got one on my cheek which has me convinced I’m out. According to Glow and Ovia, I ovulated on the 25th of Feb based on getting a “high fertility” on theOPK. Glow has my period starting Sunday while Ovia has me starting Tuesday. But then Ovia says test today. This is so confusing and frustrated 😭

Anyone else got a positive after 12dpo?