Hello, About 6 To 7 Days Ago I Experienced Some

Hello, about 6 to 7 days ago I experienced some sexual intimacy where my boyfriend's penis rubbed on my clitoris but then later we had a condom and it was rubbed near the vaginal opening. I've never actually had intercourse (nothing has entered). I also started birth control about a couple weeks ago before this happened but I was a few hours late on it one day due to forgetting because I was moving into my apartment. I also realized I was late on my period and I've now been having brown spotting with a little blood for the past 2 days. I'm not sure if I'm pregnant somehow or the spotting is due to the new birth control I'm taking.