4 dpo and cramping???

Hannah

I never get cramps unless my period is coming. Started getting cramps on the right side yesterday and now on an off all through the middle. Felt totally like period cramps but no af.

Stopped birth control at the end of December and got my last period 10 days early. Thinking it could have been my withdrawal bleed and am now fertile.

Thoughts? Anybody else gone through this and got a bfp?