hi

Hello!
Write your hope give me some advice because I did not already know who to turn to. Obviously it is difficult to make accurate diagnosis of my condition, or one does not make it. I am from Bulgaria, a man of 21 years.
The problem is the following: In the beginning it started with palpitation. (about 2 months) I had a fast heartbeat, and my heart beat very hard, also had strange pains in different places, for example in the ribs or abdomen, or back to back but right in the middle of the abdomen basket. pain is dull lately, but in the beginning was acute. Sometimes with deep inhalation, appears just before acute pain in the chest, but after a while and then it pass by, as quick to inspire her ...This will of course may be, because recently had bronchitis - cough but I recently stopped . I do not smoke, do not drink coffee.
Of course I went to the doctor, doing my echo cardiogram of the heart and found a slight prolapse of the mitral valve on heart. Since then I take pill "concor 5mg". Palpitation stopped, although sometimes I feel "wrong" beating heart. Initially I thought that all problems are valves but the doctor assure me that the condition of my heart is good and that prolapse is negligible...
So, the conclusion remains that palpitation was just reaction of organism, caused by another disturbance (this I think). Rule I do complete blood tests (one months before), but they said to me - that everything is normal.
But now, one months later these pains (back, ribs, sometimes to the left hand or heart, constant pain in the abdomen) again appear and disappear , just as in the beginning ... From here I have 2 days gas and go very often need a small and large. (4-5 times a night). All this is strange for me and started to bother me. Even feel a strange itch in the butt after walking .... I have not had similar problems, before, and it so much. It may be some form of neuralgia, but rather I think it is not.
Write your hope some doctor, a specialist in these matters give me advice ... What is my overall condition? Do I have to do research again? And what can I have (except neuralgia). What disease may be those symptoms according to you? Can these pains in the abdomen, gas, back pain, are associated with heart? Or the problem is the liver? Ulcer ...? Or...with this really strange symptoms in last time can be....cancer?! Or something like that
Or at general what this can to be...
I wish you all good! And will be extremely grateful if you help with advice or evaluation to know I how to do.