Twice now, I've woken up feeling clammy, achy and with,low body temperature. The first night, about 5 days ago, my temp was 96F, BP 128/83, pulse 80. Tonight it was 97F, 124/85, 65. I take benicar 20mg, aspirin 81mb, take testosteone 200mg every two weeks, and taking piroxicam 20mg daily for a bruiced tfcc. I take over the counter antihistamine (diphenhydramine 25mg) for ocasional allergies. Today I took the antihistamine. Could this be due to a drug interaction?