Short short period

I'm on birth control and my pack finished yesterday and i was crampy and stuff yesterday morning and then I started to bleed so I was relieved. Then that afternoon I stopped bleeding and I'm still not bleeding. Is this ok? I was worried I was pregnant but I have bad anxiety but we did try anal about a month ago and I heard if it drips down it could get you pregnant and all he did was finger me another time. Think I'm good?