I have been on Anti D's for 6 months for PMDD. At first when they kicked in the PMDD was so much better. Over the past 3 months though I feel that its creeping back. Today I feel crap, not as bad as I used to but still enough to be worried. Has anyone else experience of this. I am making a GP appointment but I assumed that once the PMDD was more under control it would stay that way.