Husband suffering from sensation of lump in throat, trouble breathing anxiety, fatigue

My husband has been suffering for about 2 months now and is getting worse. He has a sensation of a lump in his throat, cough, trouble breathing, anxiety, constant fatigue. All of his bloodwork and tests have come back normal. They have done thyroid, oxygen, heart tests, scope down nose to top of throat and everything looks normal. They won't let us see a gastro doctor to do a scope down his throat until he has been taking Prilosec for 6 months. We never take prescriptions unless we absolutely think it's necessary, so he finally broke down and has been taking the Prilosec for 2 weeks and there has been zero improvement. They also prescribed an Albuterol inhaler, an anxiety pill called Ativan and Zoloft. None of these have done anything to help him with his issues and he actually had severe side effects from the Zoloft. Since nothing has helped they are now referring him to a Therapist as they keep saying it's in his head. We do not think it is in his head and his neck is slightly swollen around the Thyroid area. He also suffers from mild Afib from time time.

I know he needs to answer some questions for you to better evaluate him. I greatly appreciate your time and help.

Thank you, Cara