Help lol.

Can I use a diva cup I’ve heard conflicting arguments something about the suction effect. I have got the Mirena which was just placed to help with my endo however the adjustment period has been painful. It’s been four weeks.. I’m bleeding constantly and I would like another option besides pads.. can’t use tampons due to infection risk as a had a hysteroscopy.

Is it painful? How does it work? Any info would be appreciated.