BP is high upon wakening

[Maxyz3]

I am on 180mg. of Verapamil and yesterday at Dr.s my reading was 157/72..he said my readings the last few visits were high. He added Clonidine HCL 0.1 MG taken at night. Because I am med sensative I took 1/2 the dose to see how the med will affect me . This morning I have a very dry mouth which Doc said would happen. I took my reading when I got up. My reading is 167/96 pulse is 87. I am not happy with the reading and do not understand why my BP is so high at awakening. I am so stressed about this. Why should the readings be high?? My Doc is sending me for a stress test and said IF I have a blockage in the heart this would cause the problem. Recent Echocardiogram was good except for " mild diastolic dysfunction is present (impaired relaxation pattern)" Maybe is why doc is sending me for a stress test.