Solving a Mystery.

This is more of a serious post today. I've been thinking that I really haven't been posting much about what's actually going on in my life so, today will be that day...
Over the past couple of months, I have been experiencing some interesting pains on the left side of my chest. I was experiencing some periods of dizzyness and occasional shortness of breath. My husband pretty much made me go to the doctor so naturally, I went to find out what was going on. The first time I went, I saw the Nurse Practicioner who did an EKG test on me which thankfully came out normal. I do have low blood pressure which she informed me could be a possible cause of the dizziness but, not the pains. Then, she sent me to get a chest x-ray to see if there could possibly be some inflammation in my rib area that could be causing the discomfort. The chest x-ray was normal. So, I went back to the doctor again yesterday and she ran me through a gamut of questions and asked me my symptoms and this and that. I am now going to get some blood screening done to check out my thyroid and anything else that could be the problem. She did a breathing test on me to see if maybe I was having some type of bronchial spasm or whatever and she prescribed an asthma-type inhaler to use when the pains started and to see if it helped. Well, I've been trying it and it doesn't help. First of all, I must be honest and say that I do not like pharmaceuticals at all. I will try to avoid taking them if at all possible. I offered a decline on the inhaler but, she assured me to give it a try and if it didn't work that I could stop. So, I gave in on that one. After all, I do trust this particular doctor and she is very genuine and I don't feel as if she is just trying to get me out of there or make money on me. I feel as though she really wants to help me.
That is where I am at right now. Waiting, wondering, praying. I am thankful that my tests so far have come out positive but, I am confused as to why, if I am so healthy that this is happening? My doctor is having me fill out a "diary" of when my pains start and any other symptoms I might be experiencing with it, etc... This has been a bit of a nuisance but I know it will help in solving this mystery. I would really like to know what has been causing all of this so, I can move on and stop worrying about it. Honestly, I know that I am ok, I just want to know what is causing it. I would appreciate any prayers and will keep you updated on what I find out.