pressure points during massage?

[beanlee]

So my 'pregnancy bible'- What to Expect When You're Expecting, says to be careful when massaging ankles. Online it also talks about the wrists, area between thumb & pointer finger and lower back.
Well today i was lightly massaging wrists because they hurt after a long at office on keyboard. Any my hubby also rubs my lower back for me. Had an injury before i was preggo and sometimes it just needs a little massage.
My question is am i doing/did harm? What exactly do they mean by applying pressure/ stimulating these points? Thank you :)  

[TaylorDB]

I also am a ftm. I only know that bc I'm going to beauty school and we are told when doing a Mani pedi not to massage bc of that..and that we should always ask if they are or could be pregnant. But also my cousin read it in her pregnancy book.

[beanlee]

Im 11 weeks, ftm, so thank you! Will just be more careful! Man, all this stuff! My doc did tell me that the book is better than the internet so ill try not to worry too much!

[TaylorDB]

I know that in the foot and in between your thumbs if you massage you can his a pressure point and go into labor. Now the bck I'm not to sure bc I make my boyfriend massage my lower back.