I'm kinda sick of Aunt Flo. She's messy and never cleans up after herself. Rubs me the wrong way. ;-)
I personally know of only a few women who doesn't mind Auntie's visits. But as it has been requested several times. Go get x-rayed to be doubly sure that it is indeed Auntie and not something more serious. A (possible) fracture that bleeds is a very not good sign.
Don't be like my gf who is stubborn about going to see the doctor over a "little thing".
Safe than sorry. If it is Auntie, then at least all you have to do is deal with the ***** as you usually do, and then carry on.