should I be worried?

I had unprotected intercourse around 4 days before my fertile period was supposed to start, my cervical fluid that day I KNOW was not fertile (tacky, sticky and white and all that good stuff) and I took Plan B within 12 hours after the incident just because I know I'd be worried sick about this if I didn't, but of course, I'm still worried. My periods are irregular but they are always very late, never early but my average cycle is about 32 days. The days leading up to now (it's been about 4 days) I haven't witnessed any fertile fluids yet, so basically I'm just looking for some of your opinions on whether I should be worried sick about this or not, or If I might be at a high risk of pregnancy??