Postpartum separation anxiety

my baby is 3 months and if i go Grocery shopping are to my appointment i literally have a panic attack because I have to leave my baby home with his grandma are aunt i cannot be a way from him more the 30 minutes without triggering a panic attack i feel like someone constantly trying to take him for me witch i know nobody trying to take him it's just my brains comes up with crazy scenarios and his getting so big so fast i don't want to miss any of his milestones ... anyone else feels like this? 

i don't have postpartum depression already talked to my doctors about that i love being a mom i was told i have separation anxiety

it took me 5 years to get to him had 4 miscarriage and a stillborn got pregnant via ivf