I was prescribed Lisinopril about 10 days ago because my BP was higher than normal. I am 70 years old & otherwise pretty healthy. My PCP wants me to take it for a month, then return for a checkup. About 5 days into taking Lisinopril, I had a little diarrhea...wasn't sure if it was a "bug" or not...it only lasted a day. However, since that day, and after my normal breakfast, and after I take my BP med, I noticed that I have a lot of stomach rumbling. It continues for about a half hour.....I know it's probably not serious, but it bothers me. Is this something I should be concerned about, or should I contact my Dr. about it?