Unprotected sex

My boyfriend and I just had sex about 3 hours ago and he came and pulled out, but he noticed some of it dripped down into my vagina so we wanted to be safe and I took the Take Action plan b pill about half an hour after, and I start ovulating tomorrow so I’m a little scared because I saw some bad reviews on the pill about it not working and its making me really worried. Do you guys think im safe?