So much guilt its making me really depressed *vent*

Smurf so long story short yesterday morning me and my SO got in a fight and there was a lot of yelling in front of our son and I looked down at him an he was pouting and looked so scared and when it was over he cried really hard. ever since then he has been acting out   he will cry out of no where for no reason and he won't go near his dad and is very clingy to me. He was whimpering in his sleep an i cant help but think hea having nightmares about us fighting. I feel so awful. Usually when I play peekaboo with him I say "BOO" really loud and he finds it hilarious but today it scared him and he screamed. I just wanna go back in time and stop it.

He's little, so he will get over it, so long as you don't do it again. Hopefully that was a lesson learned.

This makes me sad...  

I just wanna cry. But I'm trying to be happy cause I know babies can pick up on emotions really well. I've been trying to make him laugh today but nothing really works. I'm trying to talk to SO to make a plan so it never happens again.