Whatever is comfortable and truly, understand and accept that pregnancy does different things to different bodies and you really have to listen to your own body when making these decisions.
I know one lady who was jogging 5 miles at 38 weeks. I was puking and had early pelvic bone separation (SPD) that made walking painful and was close to bedridden. Both are normal (I hope you are not me!) and you shouldn't let someone else's journey make you feel bad about yourself. Or conversely, let it make you feel that good about yourself (ie, become the kind of person that talks about how you stayed active and thats why you had an uncomplicated birth blah blah).
It's kind of just luck, but your body is really good at sending up the alarms when you've crossed the line. Congrats!