Goosieloosie, Happy Birthday! Sorry your weekend away as been marred by this problem.
I note that your HRT contains norethisterone which could be where the problem lies. It is a strong synthetic progestin and that is why you have had breast pain, PMT symptoms and cramps. I feel like hell if I take it and it gives me silent migraines - migraine aura (scintillating scotoma) consisting of 25 minutes of disturbed vision but no headache - I once had 5 attacks in one day while taking it.
It could be that like me, you are intolerant to synthetic progestins which will mean that you need to start using Utrogestan instead which is a bio identical progesterone with fewer side effects and if you take it vaginally, you probably won't get any PMT or breast pain. You may be able to take it every day by way of a continuous combined regime (rather like the one you are on now) but if you find that you are intolerant to using it every day long term as I am, you would then need to take it cyclically for a few days each month which will mean that you get periods but it is the lesser of two evils. The good news is that the oestrogen works better at relieving menopause symptoms when you don't use synthetic progestins and it is also far less risky.
I hope that helps.