Has anyone here been on doxycycline?

A lot has gone on since I started doxycycline, but I noticed a couple weeks in that I was able to bake again which takes a lot out of me. It could have been sheer luck with pacing or the right time of month, but I was doing pretty well for a little. I had to drop down my dose to ween off and I’m starting to feel more pain again. I was curious if that can happen. Unfortunately menstruation, stress, and stormy weather are also a factor in this flare so I can’t say for sure. Curious what to expect if it is possible in the next week or so.