Thanks so much for all the information! Increasingly I'm thinking that I can feel some rather late wisdom teeth coming: Most of the feeling has gone, save for the back molars, and I'm sure I recall this feeling from childhood. Which probably means they're under my other teeth... But I'll let the dentist worry about that. My main worry is not knowing what's wrong.

My hormones have been a source of consternation for years though. I never knew there was much I could do other than go to my doctor and get the pill, so I'm going to get that looked at and see if you've actually managed to fix another issue for me! I'm really grateful for this info, thank you!