Help!

Bridgett

I got off of birth control a month ago(the end of February) my last period started March 2nd and ended March 7th. Me and my husband decided we are ready to have a baby, this would be our first. We had sex during my fertile week, but he did not cum inside me until March 25th. That’s the first time he has came inside me without being on birth control. I was supposed to start my period March 30th. So I am 4 days late, tested today and it came out negative. I need some one else’s opinion, what do y’all think?????? I’ve never been late before, but I’ve been on the pill for 4 years. Right before I got off of birth control I had taken a weeks worth of antibiotics then got off the pill. So I’m pretty sure the birth control is no longer in my system. Just curious and would love opinions.