I'm currently 31 weeks, and been having sharp like pains last night and today am cramping with lower back aches. My 1st child came 40wks, 2nd was 38wks, 3rd was 34wks and my last child was 36wks. Anybody else think with having more kids the less time it will be to have them. Labor towards my last child was easy 2 pushes and he was out. Anybody else  think this? Any thoughts?