Hey ladies!! just a quick question for y'all

My boyfriend and I have noticed around the time my period is coming, I start to get super paranoid. While usually pmsing i' get extremely paranoid that we're pregnant (and that's not a good thing for us) and it makes me extremely stressed. I also feel a lot fatter (even though I'm not bloated) and I seem to convince myself of the worst possible scenarios. I'm just curious if anyone else has dealt with anything like this?