So me and my boyfriend were curious on what dick in vagina feels like so we tried it. It was only the tip and it was in then right out with no reason for the penis to release any form of cum and my ovulations week had been over by about 3 days. He says he didn’t at all jack off or anything that day but my period is a day late, I had blood for the first time about an hour ago and it was red but then I also had brownish and pinkish blood. Is this he beginning of my cycle or the sperm attaching to the wall? ( the insertion thing was last Tuesday so it give the sperm time to attach).