Girls, hello, almost 20 weeks pregnant, my belly hurts almost three da…

Girls, hello, almost 20 weeks pregnant, my belly hurts almost three days straight, it pulls, it aches, it started in my lower back on the first day, now it's either my right side, or my left, or down there. In gynecology they said to take Utrozhestan, after the first dose my belly became softer, the pain didn't go away much, but it didn't pass. There is no fever, discharge. Has anyone had this before? How did you cope? Did you endure it? After how long did the pain go away? November 17th for the second ultrasound, I wanted it to be gone by then, just to drive to the ultrasound in another