Hi So I Started Taking Estarylla Oral Contraceptive On 8/14/18.

Hi So i started taking Estarylla oral contraceptive on 8/14/18. That was a tuesday and my doctor told me to take my sunday and monday pills on tuesday and my tuesday and wednesday pillas on wednesday so i would be on track. I had unprotected sex the following tuesday and he did ejaculate inside me but i took a plan b because I was scared I didn’t wait long enough. I then had unprotected sex again on 8/28/18 and he did ejaculate inside me again and I didn’t take a plan b since it had been 2 weeks since I started the pill. I did get the withdrawal bleeding on the 4th day of the inactive pills but i’m still afraid I could be pregnant. Am i safe or should I worry?