Help a girl out 🙈

Right I stopped the pill on the 18th March.

I had a normal period on the 18th April that lasted 7 days (normal for me) I confirmed ovulation with opk on 2nd may. We baby danced through fertile week and used preseed.

I done a test with first response Monday with fmu but got a bfn. I’m going to do another next Monday with fmu.

Question is, could I be pregnant and it’s just not showing up yet or could my body just be getting back to normal?! Help pleaseee :-)