Advice...

I got off birth control 7/8 to switch to another one because of the health issues that started to arise. My husband and I had sex twice in that time before my period came 8/8. When had sex twice after my period as I was STILL WAITING for my doctor to STOP forgetting to send my prescription for my birth control pills to my pharmacy. I had a checkup Wednesday 8/27 and wasn’t pregnant and everything was fine. I finally got my prescription filled and picked up Saturday 9/1 but was so busy I forgot to take it. I took my first pill last night (Sunday night around 11), and my husband and I just had sex again. (It is currently 8:37pm) we’re not trying for a baby, but if it happens it happens. Am I in a position to get pregnant still since I only took one pill so far? Should I continue taking them?