How old are they? My 2 youngest are 2 and since I've been preggo, i've had them get up into the van and into their carseats by themselves! Not so easy with younger ones though...
I only get sciatica when I'm preggers and the ONLY thing that helps me is having a chiropractor beat me up for a few minutes. Sciatica hurts so bad, I feel your pain!!!! Can your husband come home early to help you? Might be your only choice...