I don't know what I should do right now.

Okay so on the 16th my boyfriend rubbed his penis on my vagina and then on the 29th we did the same kind of play. I think its not likely I'd be pregnant from that but then on the 3rd we rubbed together and then had unprotected sex for like 2 minutes he did not cum and we stopped having sex. The next day after the unprotected sex right when I woke up I took plan b. It is also important to note that I didn't have my period in August and I did at the end of July. So my period is late and I have hormone issues. Do you think I could be pregnant or not? I have one pregnancy test should I take it or wait a few more weeks?