It does sound mechanical you've been doing a lot.
Lots of ladies in my VA group use local after breast cancer, & some even take HRT for QOL.
Hopefully it will pass, & your worry can stop.
It's probably better to use it twice a week continuously, rather than stop start, as stop start there is more chance of it getting into the blood stream as the vagina will absorb more each time the VA reappears, where as if kept plump will absorb less.