Infrequent, then frequent loose bowel movements?

Does anyone get this where they are mildly constipated and then the bowels go into overdrive? It happens every week or so to me. This morning it’s only 11am and I have been 4 times since I woke up this morning. It’s not diarrhea, just loose movements. I get an upset tummy too, then the haemorroids start to bleed.

Usually I’d say I’m mildly constipated and I won’t go more than 2 days without a movement. Then there’s a backlog and the bowels need to do some catching up it seems. The GP said it’s constipation with overflow but it’s not exactly that, I don’t get incontinent.

I have increased my daily water intake and eat lots of prunes, doesn’t seem to make much difference.