Lump?Flap of flesh or SOMETHING right at the back of my mouth

[Creeperofhabit]

And when I eat I bite it. It is in my cheek, not near either set of teeth, same colour as my cheek flesh and just looks and feels like a random lump of tissue/flesh. Not a huge issue of course but it is really annoying and means I either can't eat on that side of my mouth or I bite it, which makes it worse. What could it be? Is it something I can sort out at home? I'm on a 6 week training course with work and my dentist is miles away, not that I think it's even necessarily a problem a dentist could help with!

To clarify I bite it because my top back tooth hits it when I close my mouth, it gets trapped.

If it's something new you've receently noticed it's probably your parotid duct opening. Sometimes it gets caught between your teeth and gets swollen and then keeps getting caught.
Try as much as you can to avoid catching it, and it should shrink and go back to normal. When you get back home go and get your dentist to check it if it hasn't completely gone back to normal. If it's getting worse or bigger call 111 whilst you're away.

Thank you so much @MillyMollyMardy (I loved those books as a child!). It sounds daft I know, but it is actually really painful! I was wincing last night because I caught it while eating! And I'd not heard of that being a problem before. I'll make sure I eat on the other side of my mouth and hopefully it'll go away eventually.

I've just googled it and noted that swelling is usually caused by disease or poor oral hygiene, and I've not had anything else wrong and I'm meticulous about teeth brushing, hydration etc. Who knows what caused it.

The insides of your mouth fit together very neatly, like a 3d puzzle. Once you've bitten yourself you tend to keep doing it because the resulting swelling messes with the 3d puzzle. I have ridges of scar tissue on my cheeks and inside my lower lip from years of biting myself. Not really biting, more absentminded or stress-related nibbling. Usually if I bite myself I know about it because it's painful, but occasionally a bit of the scar tissue will swell because - I presume - I've nibbled too hard, or a nibbled bit has become inflamed. Either way, I will then find that I keep biting that place because of the swelling making it protrude. It's a pain. Treating it like an ulcer helps it heal and reduce the swelling. My dentist said that if any sore or swelling does not heal within a month, I must come and see her.

I'm not sure what your google link is but trauma to the papillae is just that. They may be referring to ascending infection of the parotid gland?

Thank you @Aparecium , it is odd how something so small can be so painful! I was wincing when I caught it while eating.

Good to know dentists can help.

Yes it does sound like that @MillyMollyMardy .I've bitten myself before but it hasn't ever been something that's not cleared up much faster than this. Thank you.

Luckily it does seem to be subsiding now.