Please help X

So I've been really bloated for a long time now. It hasn't been getting gradually bigger or anything but it's making me paranoid. I've had one period since coming off the pill and then I had to take plan b so I got a very heavy period two days after taking that. And I'm still bloated!! I thought maybe I've just been gaining weight but I weigh 2-4 kilos less than I usually do. I have safe sex with a condom (its never broken) a part from the one time when I took plan b but I've been bloated way before that. Anyone know what this could be? Is it just my hormones messing with me? Thanks in advance. (Not sure where to post so it's on multiple sorry :/