heart problem or other?

[leonvr]

I have a pulsing intermittent pain in my left arm and shoulder - mainly left forearm - comes and goes in waves - just started this morning about 2 hrs ago - extreme pain for short burst of a few seconds. Feeling a bit dizzy. Left bottom jaw feels a bit numb, and right calf wants to cramp.( I am recovering from a recent cracked rib on the left side of my body behind the left lung / heart area.)

[ChatterAlly]

I hope by now you have been seen by your doctor. I have had multiple MIs and the chest pain would always come and go in waves.  Seek medical attention immediately. If for no other reason, to rule out any cardiac issue.  Ally

[Flycaster305]

A cracked rib could result in a blood clot that could reference the type of symptoms you are experiencing.  I hope you have already had it checked out.  If not, I'd suggest you go to your emergency health care facility as soon as possible.

[subbie19]

from the symptoms it looks like impending heart attack. But, not necessary also. How old are you? Are you diabetic? Please consult your doctor immediately.

[vienna13]

Yes it could be just from the cracked rib some kind of after pain, I have seen that in my family twice and for them too were all sorts of awful feelings for long time. I remember they went to the doctor more than once with it.
Still even if only the rib I would visit an emergency, you need a professional attention.
Also you never can say it might not be your heart with this kind of pain.
My Best.