I had back surgery about two months ago which seems to be successful. In the recovery room, the nurses said that when they gave me pain meds, my BP would drop. Two days after I was home, I I took one Percosette along with my regular HB pressure meds and the BP dropped resulting in a trip to the ER via EMT s. They had a problem getting my BP up. I have had high BP for several years. Since that time, I have suffered from loss of energy and cold, clamy sweats after moving around. Also I had to have two pints of blood in the ER and I haven t had it checked since then. I mwondering if my problems could be related to blood pressure or to low iron content.