My 5-week-old son has started clamping down on my areola when he nurses. It's cutting off the blood flow (my nipple blanches) and I assume the milk flow as well, since he's gone from nursing for 20 minutes to nursing indefinitely (he'll keep at it for an hour until I finally give up and then I can still pump out an ounce easily, which is half the amount I'm normally able to pump when he's not nursing).
Have you any suggestions for breaking this habit? I notice that he doesn't do it as much in the morning, so I'm able to BF, but in the evening his clamp is so severe that I just can't suffer through it for more than a few minutes.
Thanks in advance.