DD was EBF til 6 months, when I gradually got her onto both solids and the bottle. (Makes it sound much easier than it was.) I still do a little bit of BF - early morning, at night to get her off to sleep. Just for peace and comfort, really. She has two teeth, and in the last week has bitten me several times! My nipples are bullet-proof by this point, obviously, but it hurts. I go, "Ow, no, that's sore!" and remove her rather rapidly, but what is up? Is this a sign that it's time to stop?
Well, if it was time to stop, I'd have had to stop bfeeding mine at 5months! Early teethers, the lot of them. She's just discovered something she can do that gets a reaction from mummy, and is enjoying it. If she's really biting, you can try pushing her face into your breast, to make it hard for her to breath, and she'll open her mouth and let go, rather than you tugging your pore OK' nipple out from between her teeth. It does stop - eventually.
DS3 got teet at 4 mo. but he didn't start biting until around 5.5 mo. You all handled it much more calmly than I did. My reaction was to scream loudly, shriek, yank nipple out-ouch!- then cry. But he really chomped down, grinding my nipple. It reached a peak of around 30 bites daily. I was in bits, dreading each feed. Then I read on here a thread and someone suggested something new to me. I had zero success with the methods suggested here, although appreciate they do work for others. I talked to him. It was said on the thread that maybe he wanted attention. So I stroked his head, and chatted to him. It worked brilliantly! Thank goodness. Only occasional nip now.