So I have sex about 7-8 days ago and took plan b on the day I had sex about 6-8 hours after.

I now have had spotting for three days with increased bleeding each day and abdominal pain. I am now experiencing more lightheadedness.

I am worried this might be an ectopic pregnancy because of the internet scaring the shits outta me. Or is this just the plan b? (Also taking the plan b was unnecessary as I used a condom)

please let me know what you think