I have consulted the oracle of Google, and it tells me that this CAN happen when molars are cutting. I KNOW he hasn't hurt his mouth at all - it's too far back IYSWIM.
It looks horrendous. Is this REALLY possible? If not, what else would it be? It looks awful, and it covers the area where two back teeth would be. None of my older 3 dc ever had this when teething.
Why would he be cutting molars when he only has 7 teeth? He got them in this order: Top two middle teeth. Bottom two middle teeth. Top two next to the middle teeth. Then the right hand side bottom tooth next to the middle teeth came through about 5 weeks ago. Wouldn't he get the left hand side to match next, rather than molars??
The blood blister is at the back on the right hand side. Am baffled because I have never seen this before. It doesn't seem to be causeing him any pain - he is happily gnawing on my fingers there.
He has been a lot more 'chewy' on his toys the last couple of days, and he HAS been chewing them at the back of his mouth IYKWIM, because he keeps shoving them too far down his throat and gagging, so maybe it IS the molars cutting - but what a weird way it would be to GET his teeth.
Can someone please calm me down and tell me that this really does happen with some dc when they are teething, despite DS3 being my 4th dc, and being around my friend's dc over the years when they have been teething, I've never seen this before, and I am a little concerned, even though Google says it will be fine!