Nervous

I recently got back on my birth control again, the nuvaring but I haven't been in it for a few months (complications due to insurance) I had sex the day before and he didn't pull out in time. Stupidly I put in my nuvaring the next day. It's only been a few days and I'm not sure for my period for 3 days. I'm sure it's going to be late because of me putting in the ring so early. I'm nervous that I might be pregnant. Advice ladies?