Hi Sandy.
there is an entity called
pacemaker syndrome that can cause symptoms like you describe. Call your
pacemaker doctor and tell them you are not feeling well. If this is pacemaker syndrome, it should be fixable with some reprogramming of your device.
If it is not pacemaker syndrome, your doctor will need to talk to and exam you to determine if it could be from a cardiac cause.
Good luck and thanks for posting.