What Causes Elevated BP Levels And Severe Back Pain While On Lisisnopril?

Question : Hello, i recently wore a blood pressure monitor for 24hrs, my blood pressure was all over the place, twice it was up in the 170s over 125 or so, it also goes really low around 85 over 45 once in a while when im really tired , when i over do it at work. My doctor avereaged it out to 139/ 93 or something like that. I take lisinopril 40 and a water pill. Im 54, ive had about 8 series of epidurals in my back since 2006. Ive been taking vicaden now norco with motrin 800 for pain since around 2000. Ive cut down on the motrin, it started effecting my liver in 2013, became a vegetarian that same year, im still working, i have a bad left knee, right anckle pain to do a bad strain, my back is about shot, it started ast l5 s1, with that vertebra, the 2 ears on it were both cracked with a protruding disc, now its moved up to l2 and 3, i have a worse time bending backwards due to this, degenerative disc disease, some other stuff to, whats the most likely thing effecting my heart? That pain at the l5 s1 is really bad, i think it makes my bp go up the most. Right now it was 146/ 111 , on 1.29 it was 169 /111 heart rate 75. It was also 177/115 124 .

I also have htn and diastolic dysfunction and nafl, I forgot to mention