Im 8 weeks pregnant....please some advice?

Im getting married on April 18th, everything is stressing me out, between my fiance trying to deal with my mood swings, me lashing out at people all the time, and the total chaos of planning a wedding, working full time, and a baby on the way, I think Im going nuts. Ive been havign alot of pain in my lower abdomen and right above my "private" Ive already been to the er for this wehn I was about 4 weeks and they said is was just my uterus stretching to make room for the baby, but I am so scared, the past 2 days the pains and cramps have gotten worse and my stress level of course has skyrocketed.....what do you think? Normal this early or early signs of a miscarriage???