Had unprotected sex with my partner thinking ovulation was later. The next day I started to notice cervical mucus and about a week later I started lightly cramping which got progressively worse, along with frequent urination and my boobs don’t fit into my bra. I don’t usually get pms symptoms until 2-3 days before my period. I started testing maybe a little too soon but got a few results like this, most recently this morning which is day 30 in my cycle. I’m starting to think these things can’t be trusted. Any thoughts?