Can someone describe their labor contractions?

The last few days i have been feeling a lot of pressure (especially in the rectum sorry tmi)  / dull aching in front and sometimes sharp shooting pains. At night its been getting really hard to flip side to side and when I get up to go to the bathroom my stomach gets super tight and it hurts while sitting there. This morning after trying to go pee i couldnt lay, sit or walk without the pain...took like an hour to fall back asleep. What is going on? Now its eased up a bit but still feeling the pressure and aching...just feel different these past two days. 🤔 please share your experiences before labor.