Jaw Ache on Elvanse

Hello there.
I’m on 60mg Elvanse with a 5mg afternoon booster of amfexa as and when needed.
I am suffering from jaw ache/pain - must be clenching my jaw but don’t seem to realise when I’m doing it, does anyone else have this? Is it a side effect of Elvanse or amfexa? Any advice on how to stop jaw clenching? Thank you in advance 😊