(((Lizzie B))) First off congrats on 21 yrs of recovery.
Have you had a good check up from your reg dr & had you hormone levels checked? If indicated after you get lab results, you have choices, HRT which is by prescription, Ativan or something for anxiety, something natural like black cohosh, or try & tough it out. All personal choice based on what your reg doc has to say.

Menopause, if that is what you're talking about, is tough on mood. With triggers you probably have a T, if so does he/she know how the hormonal stuff is affecting your mood?

Really feel for you, been there still doing that. The hormonal shifts vary for every woman, just know you are not alone.

Wish you the best.