Mine has recently gone up. It's done spikes as high 138, but mostly hangs around 90-100. It's come on totally suddenly - I've always had normal BP before. I'm also overweight, and on several medications, and generally not always super healthy, so in a way it's not a surprise.
I've had BP monitoring, ECG and all the bloods done a few times now, and it's picked up some other possible issues for me. I originally went to the GP for a bad orthostatic headache, and that one's still not really fixed - I'm hoping it's BP related, as that would save me worrying about what else it is.
My plan of action, with my GP, at the moment is proper healthy diet to lose weight (I've been referred for support with this, as I have/had an eating disorder), exercise (adding some more strenuous cardio to what I already do), and medication, as mine's that bit high that it's probably for the best. I'm really hoping that I might be able to quit the medication in future, if I get my weight down properly. I'm also making other changes, eg. I've quit alcohol and reduced caffeine intake.