Do you think

I took plan b almost 3 weeks ago now after unprotected sex where he didn't cum in me. I am bloated and been having cravings for a week or so now and my boobs have been sore almost this entire time. I did bleed a little bit the week after I took plan b for two days only but it was very light and dark. Do you think i could be pregnant should I test myself or just wait for my period?