You can get your tubes tied yes. I think because you’re over 25 they won’t ask as many questions. Speak to your GP about it. As far as am aware it’s a simple keyhole surgery
To be fair, when I was at my consultation for a c section during my pregnancy with my second baby. I was offered to get my tubes cut straight afterwards, as I'd stated that I didn't want anymore children. I'm in my early 30's so, I don't see why you shouldn't be able to get this🤷🏼♀️ My hairdresser had her tubes tied & she still gets periods & pms symptons.
I'm 22. This is my second baby after having my first in October I've asked for the same things and it seems it can be done. I have had a horrible pregnancy with my first and issues with this one if I end up needing a section I've told them I want to be sterilised and they said it should be fine to do x