Sorry to hear about the popping in your ear. Having anxiety
will almost certainly make any symptom worse, and so I'm sorry to hear that you have to suffer through that as well. Hopefully, we can allay some of your concerns and help you work to getting medically treated if needed. First, popping in the ear with swallowing can be common for many people at different times. For example, following a cold or other viral illness of the upper respiratory tract, it is common for the Eustachian tubes to narrow due to swelling of the mucosa. When this swelling happens, it reduces drainage from the ears, which can lead to excess fluid that will pop and sound funny in affected ears. There are many other possible reasons, as well, and you should be seen by a medical doctor
to make sure there is nothing additional causing them. This will also usually work to help you feel more comfortable with the symptoms and not be overly worried with your anxiety. Please speak with your doctor about your questions. An otolaryngologist-head and neck surgeon
(aka ENT or ear nose and throat surgeon) may be a good person to visit.