So I am 21 and my friend and I had just done anal sex for the first time. We used no lubricant and for the past 5 days I have been having brown mucous come from my rectum constantly. We both have never been sexually active until we had anal sex. I'm worried I may have contracted gonhorrea but I don't know of that's possible since we were both virgins when this happened? Any advice on what this might be would be great!