am i bein to overprotective?

naomi
my sister keeps gettin mad bc i said i didnt want anyone baby sittin my son bc what happened to me (i was burned at 9 months old i had 3rd degree burns on 50% of my body from hot water not sure how it happened the baby sitter just kept lying an my mom had known her for quite awhile) im scared to have a baby sitter i rather put my child in daycare then let someone baby sit him am i wrong? (we live on a military base so my son would goto a daycare of base)