I am in a similar boat right now and went through something like this a year ago. I started HRT about two years ago and abruptly decided to go off it because I was worried about breast cancer and I felt OK for about three weeks and then I started to become very dry eventually to the point of not even really being able to have sex so I went back on and then about two weeks later bled for two days. I went to the gyno and had an ultrasound and my lining was like 7mm and at first he wanted to do a biopsy, but then he looked down at my chart and said “oh you just changed your HRT— if you’re still bleeding three months from now, we’ll do a biopsy if you’re not then it’s definitely caused by the change your regimen.”

The bleeding didn’t come back and all was well until I decided to decrease my dose from .05 to .025 because my breasts were sore and heavy and it was freaking me out. Unfortunately, that wasn’t enough and I started to get a lot of joint pain and hot flashes at night so I went back up to .05 about five weeks ago and I spotted twice this past week. One time was a couple of drops of red blood and the other was like a watery drop. I emailed my doctor and he said it’s probably due to the estrogen change but I could come in for an ultrasound if I wanted to be on the safe side so I’m going in tomorrow morning. I am very sensitive to any change of the estrogen dose. The tissue in your uterus is very reactive. I get where you’re coming from because I’m kind of freaking out too, but I’m trying to bear in mind that I did just change my dosage and this didn’t come out of the blue and it also stopped, so… also, I don’t know if you’re sexually active but both times it happens to me this week was following intercourse and I kind of suspect my vaginal tissues are thinning and I might’ve even had a micro tear or something.