Do You Understand the Words that are Coming Out of my Mouth?

Are there any moms out there with a child with a  severe speech delay? Sebastian, our 2.5yr old, has a severe speech delay. Due to his lack of talking most days are spent with him screaming or screeching. An ear piercing scream its awful. 

Most times we take him out its beyond embarrassing. Sunday we went bowling. His first time. He was all about it until he saw the arcade games. He then was doing everything in his power to get to them. The looks we received were awful. 

He's in speech 2 days a week. He's signing. Someday are more trying than others. Mentally some days are so wearing that when my husband comes home I have to check out for a bit. Being screamed at alllll day is very hard mentally. 

Some say beat his butt.... he doesn't understand. Ignoring him.... doesn't work. 

Any other moms out there? Advice? A shoulder? 

I feel you. I hear you. I know how it feels. Stop judging the mom with the screaming toddler in public. Shes already melting inside silently the looks are not necessary.