chest muscle pain

[sznbnz]

I had been exercising with light weight for about 6 months, also i had been swimming at least 3 times a week for 3 months. That day I had loaded a bit to my chest routine and after that i was swiming. During the breaststroke i felt something tearing apart on the center of my chest and a electricity sensation that went all the way to my arms. I stopped inmediately. I was feeling pain so i did nothing for a week, the I tried working with very light weight but since i still felt pain i did not insist. Went to see a chiropractor who told me with a laser/electroteraphy i would be ready in 5 sessions, by the 4th i was still the same. Let another 2 months go and still the same, saw a doctor who said there was nothing on the X rays but when he pressured the joint between a rib and the sternum there is a lot of pain. He told me to do nothing and that in a few weeks it will be ok, but i ma worried that after almost 3 months i see no improving. I don't know what else to do. is that it for me?