Home blood pressure symptoms and conditions

I am a 37 year old female that went to the ER 3 days ago for chest tightness & extremely high blood sugar. I have had high blood pressure in the past years but as of a year ago when I was diagnosed as being diabetic my blood pressure has been normal about 117/75 so I go to the ER and they give me 2 EKG's and a heart monitor for 24hrs and put me through a stress test,they also give me this little pill and say it will help me, well not feeling well and wanting to feel good again I take the pill no questions asked. I have never felt so tired in my life. I thought well chest pains will do that to you so I dismissed it. I know they were making sure I do not have a heart attack but, my blood pressure seems to be going lower and lower and I am more tired by the minute, they released me from the hospital and gave me a million RX's including toprol and lisinopril both of whch lower blod pressure ??? do they want me to pass out? so yesterday I took the toprol only and felt like I was sinking , my thinking seemed foggy and my legs felt rubbery. I am sooooo glad I found this site because I will not take this drug ever again I already suffer weight issues being diabetic I don't need anything else. I would prefer to be interested in sex and be able too function this drug seems like it is more negative than it is worth. I think I will stick with the lisinopril, and why would they give me two blood pressure meds when my blood pressure is already normal??? If anyone has a comment please let me know I am very scared about this whole thing