Help...

My SO and I won’t stop fighting, every time I walk away he follows me into the room... we got into the car to go get something to eat and we started fighting again (well he tried arguing, I just kept my mouth shut) so bad he punched the radio rlly hard. then he pulled over into a bank parking lot and got out of the truck and started walking away “keep the damn truck and leave”. I still kept my mouth shut as he walked away and just held my numb shh-ing myself to not cry and to stop stressing... I started and still am cramping on my left side out of nowhere... I’m so scared I hate being like this 😭😭😭