irritable uterus?

B • • Angel baby 2014 • Little man born 2015 • Angel baby 2016 •Rainbow baby b/g TWINS 2017 • Girl 2019 👼🏼👼🏼🌈
Anyone else have an irritable uterus?? I'm 13 weeks pregnant with twins and my uterus is constantly contracting and I am so uncomfortable. With my son they started at 20 weeks but with the twins it's been since 9 weeks I even get them laying down. My cervix isn't dilating so dr says I'm fine but I'm still worried.