Benedryl can be habit forming. A couple of times in my life, I started taking them to go to sleep, then couldn't sleep without them after just a few days. I was able to cut the dose a little at a time by using benedryl syrup instead of the capsules (I wouldn't suggest tapering for opiate addiction, though. Doesn't work for me.) and just took a little less each night for about a week. I was fine. But I didn't take anything like that in pregnancy. Is your doc OK with this?
KJ