Well, looks like I was right after all. I do have my period, even though it's extremely light. So I just put in my Divacup and everything seems to be ok for now. I do feel a slight cramping or something and a tiny bit sore in my vagina, but that doesn't worry me, since I haven't put anything up there in awhile and I did have to remove the cup the first time because it wasn't opening properly. But now it's in and I'll see how everything goes during the night. Thanks to all of you for your help.