Diva cup

I finally went and got a diva cup yesterday afternoon and so far I'm not loving it. I feel like I've had more cramps and like I'm more bloated and feel constipated with it in. Also it hurts way bad when I take it out. This is my third day of my period and its usually more light with no symptoms on my third day and that's not the case this time. So idk if I'm putting it in wrong or if I just need to get used to it or what but has anyone else had any similar experiences with one or does it sound like I'm not doing it right?