Contractions at 19 weeks ?!

Kateri • 25 yrs young ;; Proud mommy of two ;; Girl and Boy ;; expecting our princess June 10th.
I am 19 weeks 5 days and for the pass 3 days I've been having contractions. Tonight after an argument with my husband they seem to get stronger and painful. Is this normal ? Should I go to the ER? :(