I haven't had one for years, I got reminders through and thought I would get around to booking it, or I was pregnant, or general life would get in the way. I had cancer a few years back and so that took over looking after myself in other ways too.
Got around to it due to being perimenopausal and wanting HRT and discovered I have a growth on my cervix and am now awaiting more appointments and tests.
The doctor says it can be quite common and turn out to be nothing but I'm kicking myself about my own stupidity.
I know lots of people can't have one for very understandable reasons, but if you can please go and book one and keep on top of them regularly. This is a bit of a scary place to be.