Inner thigh cramps!

I am 37 weeks along, and since about 34 weeks I've been getting these inner thigh cramps that stop me in my tracks. It seems like they get increasingly worse everyday in strength, but they are not constant. Sometimes when I start walking I get them every 15 seconds and have to keep stopping and wait till they go away, other times I am fine. Does anyone else get these??

I asked one of my doctors (she's the stupid one though, I don't like her.. there's about 5 at the place I go to, they circulate you to get acquainted because they don't know who will be on call the day you give birth) and she says it's most likely due to the baby being so far down. Is that true? Do you think that means I will go into labor soon? I can't imagine these cramps continuing, or worsening for the next 3 weeks!!