F20 Swallowing issue?

Also 5’4, 8st, sertraline 125mg, propranolol 10mg, bc and liquid iron

I have no idea what’s wrong with me. I feel like when i’m eating it’s really difficult to just chew and it feels all tense and swallowing feels like a chore. Ive had about 4 different tests done but they said nothing is wrong. but it affects my life a lot. I start to not eat and dread meals. Any advice please?