Hep C scare!!!? help

Long story my short, my fiancé was clean 18months and just relapsed. I took him to the detox facility and they tell me he has hepatitis!!!! When we got together I got tested for STDs and never had an abnormal pap. I'm 13 weeks pregnant. Do they routinely check for Hep C or do I need to calll them immediately in the morning and tell them my fears!? 
He almost died yesterday so I'm trying to be supportive during this journey of recovery but I'm freaking pissed and scared.