Chek with your mom or mom in law, you might be surprised that you or your mate was an early teether.
My son had two teeth by 3 months just like me! and yes we made it a full year breast feeding. The only time it was a problem (breast feeding wise) was when he fell asleep attached and started "slipping" off the breast. DON'T PULL...push the baby towards the breast and you'll be ok.
Sometimes babies get fussy, or drooly or feverish, but there are homiopathic remedies. We didn't have too many bad issues.
Just so you know: ALL the teeth will come correspondingly earlier. My son is 12 and has his 12 YO molars since he was 9 or so. Just keep up the brushing and don't delay that 1st dentist appointment!
Good luck and enjoy!!