should I be worried? 🙃

I've been on the pill since September, that's been mostly my only form of contraception, and I haven't had any problems with it at all. I went to the doctor the other day and she put me on amoxicillin for my cold, and I forgot that medication lessens the effectiveness of the pill. I started it yesterday, and I had sex last night completely forgetting about using a condom or something else for extra protection. My period is next week, but I worry about everything, so should I be worried about being pregnant if I just started the medication yesterday too? S it too early to take a pregnancy test? 🙃