Yes, vasoconstriction is a known side effect of amphetamines. I’m a bit puzzled that you’ve already talked with your doctor about it, yet still need to come ask a bunch of amateurs about it. Your doctor should do more than express concern, she should provide a treatment plan. Is there something I’m missing about this situation? Given that it’s a known side effect risk, there must be strategies to deal with it in some way or another.