No progesterone, just oestrogen?
Usually bloating is caused by the progesterone side of things I think. But if you're not on any, there goes that as an idea...
Have you had your bloods tested? 50 is quite a low dose to be on. I suffer from progesterone-related constipation/bloating/sluggish guts and when I increase my oestrogen, it really gets things moving and back in balance. Oestrogen affects the gut motility. So you could ask for a blood test to check your oestrogen levels and if they are low, ask to increase....