Confused and TTC

Ladies,

It’s my first month TTC. We got busy every other day. I checked my CM. I monitored when I was ovulating. This is my first month off birth control pills btw and my period was SUPER regular down to the day. Well I’m days 4 late. Took a test and it was negative. What should I do? Test again? How likely am I actually pregnant? Or is it just my body getting used to being off birth control? What do you all think?