Is It Normal To Have Uterine Tightening And Severe Pain At 18 Weeks Pregnancy With A History Of Early Contractions?

Hi i m 18 weeks pregnant few hour laters i feel constant pain for a while in ths period i cant walk or lay down from then i have full body pain nd uterus tightening this is also happen in my last pregnancy contractions come in 5 month nd my uterus open for 1cn