39 weeks and 2 days pregnant. Having sharp shooting pains in my right side. I've gone to hospital…

39 weeks and 2 days pregnant. Having sharp shooting pains in my right side. I've gone to hospital for them before but was told it's just round ligament. Only difference this time is I am experiencing bad period like cramps/indigestion feeling in stomach and back with it. It isn't timetable not had it increased in intensity. Never had this with my son. It's lasted 3 hours now. Advice?