K.G.
I had an irritable uterus with my 2nd pregnancy. I started having contractons at about 18 weeks. I couldn't even walk up the stairs without having cramping or contractions. My midwife suggested that I wear a prenatal craddle. It is a special type of pregnancy belt. When I started wearing it I could go back to my normal life again without having any contractons and had a full term baby. It is worth a try.
I will include a link to give a better idea what this thing is.
http://www.supportsockshop.com/acb_sss/showprod.cfm?&...
Blessings, K.