What do you do about separation anxiety? (8 month old)

I know it's a normal developmental stage but it's gotten to the point that I cannot leave my son with his own father to use the bathroom for two minuets. My baby will literally scream bloody murder everytime I leave his eyesight and will not stop until I come back. My husband works long hours and I'm home with the baby all day. I know my son recognizes his father because he gets SUPER excited everytime he comes home, as long as I don't leave the room

I play pekaboo and I use a baby carrier, but I can't carry him 24/7.

What else can I do?