ADVICE PLEASE ON MOOD SWINGS

Hi everyone, firstly sorry to go anon, I’m a woman of a certain age take HRT, I’m having mood swings, one munute fine, the next either crying or agressive, right out of the blue, now like everyone I get a bit fed up, but I’m not depressed, also at times like this I seem to let the least little thing get to me, and I feel like all my confidence has gone, but when I come out the other side everything is good again, is this my hormones, or the MS, any advice would be good, thanks, ANON x