Possibly pregnant.... update ....

So over a month ago I had some drunken sex.... I remember the first time using a condom but the other times (with the same guy of course) not entirely sure. It was a day before my period was supposed to start and the next morning I woke up with my period as normal ... but lately I’ve been feeling sick and I’m 12 days late. Should I take a test? Or do you think it’s not likely? I didn’t even think about possibly being pregnant until I checked on here and seen that I was already 4 days late.... help please

Alright so it came out negative... I may take one in a couple more weeks just to be sure. Because it still could be early. But most likely it’s just my period being a bitch again