Getting On My (Sciatic) Nerves

OK, so with MS I've had Sciatica before. But it was always in my left side. I had heat therapy for it and other methods of pain relief even up to going to the midnight ER for steroid shots it. But now...
Sciatic nerve pain (not full on sciatica) has been hitting me to wake me up, and it gets where I can't go back to sleep. I know it's a pregnancy thing at this point. It was, originally, just hitting me in one side at a time. But now it hits one side, stays, and hits the other. So no matter which side I turn to lay on it is there! I do have to say that it is the most annoying thing about the pregnancy so far.
LBG has me on a timer: When she wants me to get up and get moving, she sends the shooting pain through my sciatic nerves and makes it so tossing and turning is useless.
I don't know if it's because I'm in a different bed right now or not (I've been down at Yale for the past few days and the both sides thing has happened every morning). I know I got it at least one side in my normal bed, but I also remember turning over and it being okay. We have the memory foam on the bed at the house. It was always my right side there. I'll keep a mental note and do a status report after I get back to my normal sleeping arrangements (although the more I think about it the more I think it might have started that way, but it was like this before I came down to Yale, too). I mean, she is getting bigger, so it's entirely possible its now in both legs.
And it's not like this is full-on sciatica (like it can get with MS), so far it's just really annoying pain in my... outer thighs (you thought I was going to say butt!). But I know it's along the sciatic nerve because I've dealt with that beast so many times.
It's not LBG's fault, she's just settling into her "final" position. It's just amazing the timing she has. According to her scheduling, she'll start the labor around 9/10 am. We'll see how true that prediction is in a little over a month (OMG! JUST A FEW WEEKS!).
Most people start to feel this paid around the third trimester, but they get it when they're standing or sitting. I do think it's a bit odd that I get it when I lay down, and feel better when I'm up and about. If I'm sitting right after it doesn't go completely away, but it's a very dull sensation that is ignorable. That's what I'm doing now, and I have to concentrate on the feeling to describe it, because it's on it's way out for the day... I hope.
I'm a little worried about it during labor. Is sciatic nerve pain something I need to worry about during labor? Does it rear it's ugly head at that time, or should it be past that point? They say (okay, and you've gotta understand whenever I say "they say" I'm talking about the people from What to Expect) that it'll continue a little past pregnancy as my hips realign themselves.
I always feel like I'm talking about a car when I say realign. But it's true. My hips have been popping more and more these last few weeks. At first it was just getting out of bed, which is understandable given the struggle it can be sometimes with the covers. But now, it's even simply getting out of the car. In fact yesterday, when I was getting out of the car, I had to stop for a second to prevent that from happening because I could feel it press against the sciatic nerve for a moment while it tried. I didn't want double the pain because of that. I mean, my hip popped before I was pregnant quite a bit, too, but now I'm aware of it for different reasons.
Anyway, if you know about sciatic pain and pregnancy, please let me know if it happens during labor.