Bleeding from vagina after straining for bowel movements

I'm due on my period in a couple of days and have been having bad PMS yesterday I strained really hard for a bowl movement (sorry tmi), and the after I noticed a bit of bleeding from my vagina (definitely came from here I checked ) I had a smear test done a couple of months ago which was clear and I had a baby 9 months ago  I'm just wondering if anyone has experienced anything similar ?  I have health anxiety so always think the worst