What if my friend and I might be pregnant?

on the 13th dec me and my best friend went out like we do every saturday but this saturday her boyfriend and 1 of his friends came,, he is 15 and his mate is 16 they where drinking but me and my friend wern’t then they offered us some but we only drunk like a mouthful and that was it, and the next thing we knew we where on the floor, they must have spiked us or something because we only had a tiny bit to drink and they must have done something to us like because when we eventually went back to our normall selves we where layed up against a wall and my pants where undun and my mate’s top was showing her bra, but we normally have our periods at the same time every month( end ov month) bu in december we didnt have our periods my mate has dumped her boyfriend for doing what he and his mate did to us and we have informed our parents and they have informed the police I think, but could this meen we are pregnant, I meen we are 13 and if we are pregnant then thats the rest of our lives ruined, we aren’t ready for kids as we are literally children our selves!! please don’t lecture us on it’s our fault we drunk it and did what we did without protection so you deserve the consequences because we dont, because we didnt know the drink was spiked or whatever and we didnt know what was going to happen to us when we had drunk it and even if they did do anything to us it was there fault - they didnt use protection, if we are pregnant (we only told are parents that they had spiked us) they will b mortified and will who knows what they would do to us! if any 1 has any advice on what they think we should do then please tell me xxx