Hi Twiglet. My story is similar to yours, been on Conti for just over 6 months after being on Sequi for 2 years. Was bleeding 3 weeks out of 4 on Sequi. Had lots of tests, but nothing showed up, so then moved onto Conti. I'm 51.
Bled for 1st 4 months, but now bleeding is slowing down to just brown discharge every couple weeks. Doc not happy though, so 2 years after first set of tests I'm having same tests again tomorrow.
I'm pleased she's being thorough, and am having any tests that are thrown at me, but hoping the slowing of bleeding is a good sign. Everything else about Conti totally agrees with me and I feel fab.
Give it some time, but tell your doc what's happening.