Girls, hello! I don't understand what's happening, is it that my worko…

Girls, hello! I don't understand what's happening, is it that my workouts got stronger? In general, when I stand, for example, preparing something or outside in the street or in the store, I feel very tight in my lower abdomen, it hurts and pulls, and immediately I want to go to the toilet urgently (sorry for the details), when I sit down or lie down, it gets better and passes, only as soon as I get up, it starts again. If it wasn't for the due date, I would have thought I was pregnant