Unexpected trip to the hospital

Well, I'm 28 weeks and we just got home from the hospital due to having contractions. The doctor monitored me for a while and then did an ultrasound and he looked fine so she sent me home and told me to take Tylenol for contractions.. is it normal to just dismiss contractions like that? I know they weren't super high but still... considering I've had a stillborn around this time with my last pregnancy I just thought maybe she would monitor me a little bit longer than an hour