Teething or still hungry?

So I'm pretty sure my baby is teething. So so so extremely fussy and wants to chew on everything. It is to the point now that she screams between feedings. I usually feed her off of one side and then she is done. But now she is falling asleep after every feeding. When she wakes up she is extremely fussy again and cannot last two hours between feedings. The only thing that calms her down is feeding her. So is this she is starving or is it she wants the comfort of breastfeeding because her teeth are hurting?