Advise.

I have a 9 month old son and my SO and I just found out in pregnant again. Two days ago, tonight he said he's going to go to his friends house. I asked him who was gonna be there and he argued with me saying I dont trust him and all this then he told me " maybe you should be worried" a month or two ago a woman messaged me with their conversation and he was calling her gorgeous and everything so I'm having a hard time trusting him, when we got home he told me that he wants me to leave. I dont know what to do, I'm scared to.have another baby and be alone without help.