Anyone heard of this pain "cocktail".

Since about 10 years I have been getting chest pains of different kinds, which seemm to come as and when they feel like it, from no apparent external cause. Sometimes the pain is in the centre of the chest - a steady pain that can last for hours. Sometimes it is on the left side of the chest and can also can last for hours. One or the other of these pains comes almost daily. Then there is another kind of pain that can come on its own or when I am experiencing one of the pains mentioned. It is a sharp pain in the centre of the chest and only lasts a few seconds. This ipain might only come once, for a few seconds,  or it might repeat itself six or seven times withan a period of a few minutes, before disappearing as suddenly as it came. This sort of pain comes a few times weekly, and can come at night, at rest. I have been to cardiologists and had stress tests done, but no conclusive diagnosis. The diagnoses, in fact,  range from yes, definitely ischia to no, definitely not ischia. My life has not been the same since these pains first started and I see no solution. Anybody else have similar pains?