Off cycle or something else?!?

Let me start by saying I had a chemical pregnancy last month which was so painful because not only did I not keep the pregnancy, I had to go thru the process while being in an airport then plane!!! Anyways, my cycles are pretty regular with a cycle or two shorter or longer than usual. It happens. Well after the loss I decided no tracking. Just to have fun with it and so far it has been. Well, my SO asked me if my "friend" has come yet!? (His code word) I told him it will be here and checked the app to see when I was due. I wasn't due yet so just said we still have a few more days to have fun before "it" comes. Tuesday was when AF was to come and I thought she had made her appearance but I was wrong. There was light pink when I wiped so I put on a pad and nothing on it all day. Only when I wiped I saw pink. Now I know some will say that it might be implant but the next day I went to the loo in the early morning because I had to pee so bad and I saw red. And it was a light flow that a small amount dropped into the bowl. So I put on another pad and went about the morning like always. Told SO that my "friend" is here. He said ok with a sad face, (I think he liked the sex we were having) and went to work. Well, the rest of the day no more red flow. In fact, the pad only had two little spots on it and the discharged changed to almost a rusty/brown discharge. I told SO that maybe my friend is not really here and he was excited, and you get the idea of what happened later😉. Well, I'm still having the rusty/brown discharge but nothing on my liner. My breasts are not killing me but they are a little sensitive. I don't think I'm pregnant, but I wonder if last months event might have something to due with this months cycle appearing to be off?? I'm still waiting for AF to come on full force but I'm not sure if it will or if maybe I have an infection I'm not aware of. Any one experienced this and it was an infection or just the cycle being off balanced?!? I'm in the process of finding a new GYN so can't really go get blood work at the moment. Any advice would be appreciated.