Hello, I'm 26 weeks pregnant, my belly has been hurting since morning like…

Hello, I'm 26 weeks pregnant, my belly has been hurting since morning like period cramps or like something is spinning inside, it's unclear, I called the doctor, they will come only tomorrow, please calm me down for now that everything is good ? that someone had this at my due date and everything is fine now ? the baby was active all morning ☺ constipation maybe because of this?