DD (almost 7 months) has started using her hand to push my breast away from her mouth while she's nursing, basically giving herself a really shallow latch. Is this a teething thing? She doesn't have any yet but she's been a major grumpypants and gnawing on everything, so I feel like they're getting close... But this latch thing is not comfortable. Plus it feels like she has teeth when she's latched on, even though she doesn't.