Condom leak???

Had sex 3 days after my “ovulation” day. My Bf and I were doing missionary and he wore a condom. He pulled out while he was finishing or Atleast that’s what he said. The ring was still somewhat tight but it was wet a bit around it or above the the ring, near the balls a little. Plus there wasn’t a lot of semen at the tip of the condom but he said that sometimes it can go down the shaft of the condom but it shouldn’t leak. I’m new to sex, am I stressing out for no reason? I’m now 2 days late on of my period. But my periods have been extremely unregular since I took plan b 2 months ago. Really embarrassing to buy a pregnancy test because my CVS, has them locked up and I have to ask to get them. Please give me some advice or help!!!