Shorter Cycle

Barbara
Hello everyone. This is my 2nd time using the diva cup fully (I got it three months ago but at the end of my period). Last month was normal, came when it should have, lasted the normal 6 days. This month it came when it was supposed to but it only lasted the normal 2 heavy days and then pretty much stopped, I had very very minimal spotting when I wipe but nothing on my pad. I'm having some cramping now (sometimes I'll get cramps a week after my period for a day or so). My boyfriend and I did have unprotected sex using the pullout method on the 1st day of my period (it may sound gross but it does help my cramping and he doesn't care. We just shower afterwards) but I was still bleeding like normal with the exception of it stopping after the 2 days. Technically today is supposed to be the last day of my period. I don't have any other symptoms, no nauseousness, no breast tenderness, nothing, just the cramping. Is it normal for diva cups to shorten your period?