What does all these symptoms link to? Can someone pls help me I'm going crazy soon?

For the past 3 wks I keep feeling

Lump in throat (not really painfully jus uncomfortable sort of like throat infection but doc say she dont see any infection in my throat)

Dry mouth (even after drinking water)

Loss of appetite ( hardly eat 2 mouth full at each meal)

Abnormal vaginal bleedings( gyne say no signs infections or std )

Shooting pain in arms and legs ( last for few secs)

Joint pain in all joints (fingers wrist back armpits elbows knees on and off at diff locations through out the day sometimes feel lose in the knee cap)

Feel weak

I have did blood tests including thyroid test full blood test Ana etc chest X-ray

All test came back normal

No infections no virus no arthritis

I'm very worried and Duno wat to do now can someone pls tell me wat is wrong with me