Not to sound like a sensationalist or anything, but my menstrual cup changed my life.
Tampons had never fit well with my body and were always leaking even when inserted properly, and pads were uncomfortable. I own a Lunette and a Ladycup, I use the Ladycup most often and aside from the bloating and no oral sex, being on my period is completely inconsequential for me now!
Also, I started using my cup when I was still a virgin, and talking to girls who have used them after starting to have sex, they've said that their partners haven't felt like they've gotten looser or anything since they started using them. I'm a HUGE advocate of menstrual cups (this silicone kind, the I have a few insteads and didn't like them). I eased myself into it with the menstrualcups community on LJ too and it was SO helpful!