2 year old climbs out of crib

So my only child is going to be 2 years old on feb 26. Last week climb out of his crib and came walking i tithe living room crying. He hasn't done it since but I'm so nerves he is going to try it again and get hurt. He has been climbing into his crimb via arm of the rocking chair since he was a 1 year old. I have a baby video monitor but I can't watch it 24/7. I'm nerves to take a shower that he will fall get hurt and I won't be there to help him. Any advice or am I just too over protective?