kind of urgent I guess

Okay. So about 2 weeks ago I had unprotected sex... Dumb I know and I took a take action now pill ( generic plan b). Everything was going fine. Until today. I had light pink spotting with cramping as well . And me being the panicky person I am. Googled it and it said " implantation bleeding " could this be possible ? Or just a side effect of the pill and it made my period lighter? It's really stressing me out 😩😩