It must be the HCTZ... I was on Lisinopril 20mg for a month with ...

It must be the HCTZ... I was on Lisinopril 20mg for a month with little avail to my bp. I'm 25 and prior to taking it I was at 150/120: during I was bouncing between that and 130/90ish. A Walk-In clinic doctor started me on Lisinopril/HCTZ 20/12.5 and within the week, I had major upper back pain, trouble seeing and severe nausea. I have since gone to half a pill and feel much better. I hadn't heard of any of these side effects. Please let me know if anyone has similar experiences. My Mother thinks I dealt with a bout of the flu, my sister thinks I'm pregnant. Hmph. *UPDATE* Two pregnancy tests and one week later and still not feeling all that much better. I'm still on half a pill and still getting nausea.