Vasospasm?

Spec
Has anyone experienced vasospasms?
I've been struggling to breastfeed because I'm finding it so painful. I've managed to put up with it for 5 weeks thinking it'll improve. But with no end in sight I'm losing hope. 
I have intense nipple pain during feeding, despite seeing a lactation consultant. 
Between feeds I'm experiencing a constant pain almost like deep down I have a bruise. This area also has an aching pain that radiates through to my shoulder and back. 
Is this what vasospasms feel like?
If that's what it is, what should I do?

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