Hi! About Three Weeks Ago I Got Too Drunk And

Hi! About three weeks ago I got too drunk and was very much taken advantage of. I saw a condom on the floor the next morning so I'm pretty sure we used that... To be safe I still took plan b about 30 hours later. I had a very heavy period 6 days later which lasted about 4 days. Was that my period? I'm just a little worried because for the last two days I've been feeling bloated and a little crampy. No other symptoms. Could this still just be the plan b?