Eu conception pills and early ovulation ?

I recently had a TFMR 6 weeks ago, my cycle came back @4weeks exactly even tho I’m very irregular so I started taking eu conception pills to help ovulation and normalize my cycle. I’m on cd12 and got a dark opk which I’ve never had this early. We’re not trying but we did have sex last night thinking I wasn’t close to ovulation. I ovulate normally around cd30+...Now I’m worried we’re going to get pregnant this cycle and I think it’s just too soon. Do you think this is close to positive?