*UPDATE* can anyone help?

Nattie • N V Cull
Hi guys it was the end of my period last night, well (tmi) I had sex today, and now bleeding pinkish reddish blood with a few cramps???? 
Had to put a pad on, nothing to worry about right? 
UPDATE - stopped bleeding then had sex again today and bleeding pink blood again, with slight pain in my lower abdominen, really worried xx