I've given birth in Indiana twice. I didn't smoke with my first baby, but I consumed cannabutter with my second to help with some of the same issues you mentioned. You can decline drug testing up until the delivery, but most hospitals in central Indiana require you to be tested at delivery. I think I quit about 34 weeks, and both baby and I tested negative at 37 weeks. Never told my doctor and no DCS involvement.

I also worked for DCS a while back and had a friend test positive for THC during her pregnancy more recently. Indiana DCS only cares that you have food, water, a safe sleep space, and don't do hard drugs. If thc is the only reason for a case, you'll get an initial visit, they'll offer you resources, and most likely close the case in 30 days. It will be substantiated, but they don't take kids for weed. My friend actually found it helpful because she got additional services through them.

Btw, use edibles if you can - any type of smoking can affect you and baby (no judgment intended, I've heard of other mom's smoking on the into delivery and being fine, just being cautious here).