Help?

I’ve been on the pill for two weeks and had unprotected sex today and according to glow I ovulate in two days. While I fully understand that any time people have sex you run the chance of pregnancy and stis because I have a kid 10 month old so no need to state the obvious on that part. but my question is “is the pill effective yet” or no and if not is the likelihood percentage that glow predicts accurate or less likely because of the pill. And should I keep taking the pill until I’m possibly late?