My 4 mth old baby has two teeth and won't stop biting me at the start and end of most feeds. She's only just had her tongue tie clipped so I think she just mucks around with anything in her mouth. I yelp and take my nipple away but can't think of anything else to do. Because we still have latching issues (we're getting better slowly), it isn't easy to notice when she's starting and stopping a feed. It's really getting me down, not to say seriously painful!