I've been taking .5mg-1.0mg of lorazepam with 6mg of melatonin before bed to help sleep for the last four weeks. I am now experiencing moderate diarrhea in the morning when I wake up, which lasts for about 60 minutes or so. This has been happening for the last week when I wake up. It is also accompanied by a bit of an uneasy, almost nervous feeling. Like morning nerves. Can this be the meds? My doctor seems to think it's a stomach bug but it generally resolves itself by mid-late morning. Thanks