Need to know I am not alone

Yesterday the worst thing that could have happened happened. my 2 month old fell off of the couch while I walked away to make him a bottle. In hindsight I should have just put him in a safer place. He hasn't started to turn or roll yet so I figured he would be safe. I was wrong. He was laying on a blanket since he spits up a ton and my dachshund loves the smell and taste of his spit up and tries to eat it any chance he has. The 1 min I walked away is when he decided to grab the blanket the baby was on and try and grab it right from under him pulling him off the couch! I heard a normal cry. Came back to find him on the floor belly first crying. I quickly picked him up and he instantly stopped crying. Fed him a bottle and was trying to examine him for bumps, bleeding, or bruising. Didn't find any thankfully so I called my husband and headed to the ER. They said he was fine since he looks good and fell only 2 ft on carpeted tile on top of a blanket. I'm still torn up about it though. I never thought I'd be the one saying my child fell off the couch. Please tell me I am not the only one. I felt so embarrassed at the ER. Like They were judging me.