Can over tightness of the pelvic floor cause infertility?

As far as I'm aware, no, I have seen patients who have vaginismus, so unable to have penetration with sex who managed to get pregnant. Generally having an overactive pelvic floor, so having a tight pelvic floor might reduce the ability to conceive naturally because of the inability to penetrate or say, if you're going to go through IVF or IUI and things that have to go up there if you've got tight pelvic floor that could become an obstacle.

But it doesn't prevent fertility. And as for males being able to contract their pelvic floor is important to sustain an erection and for both, good for both male and female for good orgasms.

I think the most important thing is it needs to be able to relax and contract so it needs to be able to let go as well. So if you're having issues and you're on that path again, it may be worth speaking to a pelvic health physio to see if they can help you with that.