Ever since I had my son in 2014, my periods started becoming regular, and I would ALWAYS get cramps the week/days before I would get my period. But I haven't had any cramps, and was due to get it 2 days ago.

Also, me and SO were messing around the other day, and accidentally knee'd me in the stomach. Afterwards, I checked and saw I was bleeding. Thinking I started my period, I put in a tampon and went to bed. But when I woke up, there was absolutely nothing on the tampon when I took it out, and haven't bled since. Any advice? Thanks in advanced.