Sedative effects symptoms and conditions

I took my first dose of lisinopril 10mg on Friday morning. By 2:00 pm, the abdominal cramping was so bad, I ended up on the couch unable to move. Have been unable to eat anything, including cream of wheat, without feeling every part of my intestines cramping for the first hour or so after eating. The longer I go without eating or drinking, the more reduced the pain seems. But every time I stand up, I feel as though my contents of my abdomen are going to spill onto the floor. Riding in the car over bumpy roads is no picnic either. I didn't take my pill this morning hoping that this would all go away. It hasn't. I am due to see a nurse practitioner tomorrow am (after two calls to the office to complain about this). The saddest part of this is that at my physical last Thursday, my PCP declared me in great health...and just wanted to change my BP med from a beta-blocker to the lisonopril because I had complained of the former's sedative effects. I guess I should be careful about what I say when it comes to the meds.