I Am 68, Male, With CAD, Five Stents Over Past

I am 68, male, with CAD, five stents over past twelve years. Otherwise fairly healthy. Biggest problem is insomnia. It's really negatively affecting my life. Have been tested for sleep apnea and do not have it. I am wondering if it could be a side effect of the meds I take which are: metoprolol, rosouvastatin, zettia, clopidogrel, pantoprazole, pramipexole, valacyclovir, 81 mg aspirin. What do you think? Thank you.