Help. Bleeding.

So my fiance and I have been trying for a baby for a year now. My ovulation was the 17th-23rd. We had sex the 2nd, 12, 13, 17, and the 21st. When we had sex the 21st we tried to do anal for the first time. The 23rd when I wipped I had pinkish spotting. Only a little and then that was it. I have sore boobs, mood swings, and cramping. We don't want to get our hopes up. I don't think the bleeding was from trying anal. But I don't want to think its implantation bleeding. Help? Any advice?