Mildly terrified

So I originally got this app when me and my ex were ttc and unfortunately we separated. An unfortunate reality but it is what it is. We’ve been apart for two months or so and long story short me and a friend of mine have slept together in a heat of the moment about a week ago and now I have found myself being a paranoid wreck. We didn’t use any protection as both of us were intoxicated to put it likely and now I’m anxious it could lead to pregnancy. I know this sounds stupid but I’m in my early 20s and I haven’t got anyone to really vent to over it