Broken condom

So my boyfriend and I saw a commercial for Trojan groove condoms. We decided to buy them since they say they help with dryness which is something we commonly have. After using only half of the package, we had one break without us knowing. Because we didn't know it was broken, he came inside me. We freaked out and drove right to CVS and bought plan-B. I just started birth control a few days ago. I called my OBGYN and she said I should be alright because I should miss ovulation.. Hopefully. What do you guys think? Have any of you been in the same position?