When do stomach pains become a concern?

Okay 31 weeks and 5 days. I really do not like going to the hospital unless it’s a must. Last time I went due to vaginal bleeding, I was stuck 6 times and it was horrible. I hate it. But since yesterday I have had some upper stomach pain mostly. Almost like some punched me in my stomach. The pain doesn’t have me on the floor in tears but I do have to hunch over and it takes my breath away sometimes. Sometimes the pain radiates down. But last night I woke up multiple times from moving and getting a pain in my stomach. Is this normal at this point? When should the concern start.