I am on blood pressure medication for high blood pressure. However, my pressure has been running 115/51. My pulse has been running 50, 41, 55, 51 and I have been very tired and have trouble sleeping. I went from my pill and 1/2 to just one pill. Pressure now has been running 130/51, 125/ 55. Pulse is still slow at 51, 50, 41. What is wrong?