Had a Scare Last Night ( Thyroid?) Need Some Feedback***

Hello, I had a real scare last night and thought I would post on this forum and see if anyone has had a similiar situation or perhaps knows what may have caused this. I would greatly appreciate anyones feedback!!

I have always had thyroid trouble, first when I was a teenager and I had hyperthyroidism then I beleive I outgrew it or something and didnt have any trouble until I was 23 and at 24 I had a baby. Now I was hypothyroid.I continued to have problems since. I had another child when I was almost 30 years old and of course still on medication and hypo. A few years laters I was told I had hashimotos. Ever since I have never felt like any medication works, I always have every one of the symptoms no matter what kind or how much medication I am prescribed. I basically thought this is as good as it gets and have lived with it. About 4 years ago - out of the blue I began to have these "attacks" so-to-speak where they would start with a pain in the diaphram area right between my rib cages - the pain would quickly grow to be quite intense and at times so bad I would feel like I was going to pass out. During this time I would begin to sweat and I mean sweat horribly - it just drips off me and makes a bug puddle and I get so very hot. After some time it subsides and the sweating stops, the pain leaves and I begin to get very very cold, ice cold and also very tired ( must go to sleep). I had these for about 10 months and went to every e/r we have as well as to several different kinds of doctors to find out what it was. I had a lot of tests but nothing appeared to be wrong. They could not say what it was and could never find anything. One of the problems is by the time I arrived the attack was gone so I camped out in the hospital waiting for an attack to occur and of course any time you do this - you are not going to have one. Then all of a sudden these went away for about a year and half or two years. Then about 6 months ago they came back except the only difference was I did not have the pain as I had before. I had no pain.- the last few weeks the pain has come back except its not nearly as bad as it was before. Its also a different kind of pain ( hard to explain.) I am not sure if this pain has any value to it but thought its best to mention it. Anyways last night I had another one except this one I couldnt seem to ride out as I have in the past. It was very bad and I did not feel well at all. I also became scared so my daughter got the neighbor. He came with a thermometer and blood pressure cuff. He took my temp. With one of those you run along the side of your face and my temp was 92.3. When he arrived the attack had passed and I was lying down and starting to feel very cold. He could not get the bp to register. Once , about 3 years ago when having this - I had experienced a bad one again and the fire dept. Was called. They, too had trouble with my bp as well as my heart rate which they said was very difficult to hear and the beats were not enough at all. My neighbor had me drink some salt water and take a few bites of bread with peanut butter. He also ran the blowdryer to warm me up. My temp. Began to increase and finally my bp registered at 93/65. I felt much better and fell asleep. My son says that I have no thermostat and said he has always thought this for many years as I am always cold to the touch especially my hands. Can anyone help me! Please. Thank you kindly, kimberly