About a week ago immediately after sex I noticed pink on the tissue when I went to the loo. This hasn't ever happened before after sex but wondered if we'd been a bit rough maybe. Anyway. Nothing the times after that. But for the last couple of days I have been getting persistent shooting pains in my boobs, cramping and mild nausea. I am due on AF tomorrow. Could the pink on the tissue have been implantation bleeding that was ''washed' out with semen? (sorry too much info!!). Has anyone experienced it happen that way before?