Falling at 28 weeks pregnant.

So today i tripped and fell on concrete landing on my hands and knees. My one knee is scrapped cut swollen and starting to bruise. I been feeling mild/ light cramping in my abdomin and tightness. I haven't really felt baby move since the fall its been about an hour maybe an hour and 30 mins. Should i call the doctor or go in and get checked just to be safe or should i wait and see how i feel later?