Contractions? Do I need to go to the hospital?

35+3 at 2pm I started having dull period like cramps and could feel it in my tights! About an hour later it was much stronger, by 4pm I was cramping and having little moments of super heavy cramps. (I've had some brakstin hicks but this seems much stronger) By 5pm I was home and in bed still in lots of pain, took some Tylenol and took an hour nap. Seems they calmed down but now at 10:30pm I'm still in a lot a lot of pain and babys movements are not helpful! Yesterday I lost a big chunk of my plug but I haven't had any bleeding or gush of liquid. After hours of this should I be heading to the hospital to get checked?