aswander

Not quite certain, but may be Laryngeal Reflux (LPR), which causes chronic dry cough, caused by small amounts of stomach acid getting into your throat. This is treatable with a Proton-Pump-Inhibitor taken 2x a day. The 3 PPIs I recommend are all by prescription and are called Nexium, Aciphex and Prevacid.

Tell your Mom that you need to see 2 doctors.

You need to see an ENT (Ear Nose & Throat / Otolaryngolosist) to have a "scope" done. You need that doctor to check for redness and swelling in the lower throat and larynx, which would generally confirm LPR.

You should probabably also visit a Pulmonologist who can check you for asthma and lung capacity. But please note that many many "atypical" cases of asthma that don't respond to asthma medications are actually caused by LPR. What happens is that first the acid in the stomach rises up into the throat, and then it gets aspirated down the other pipe into the lungs, where it mimics asthma, but will not respond to asthma medications.

If your Mom won't help you, make the appointments yourself. Find out who your insurance carrier is, then use that insurance website to find a doctor in your health plan and call and set an appointment. If you have insurance, the insurance pays for most of the visit and you usually have a copay of about $10-$25 dollars, which you will need to get from your Mom. You will also need to give the doctor the insurance card. Maybe your Mom will see how serious you are if you go about setting the appointments for yourself - you don't need her to do it. Just get the insurance card, see who the carrier is, and if you have any questions, call the customer service number on the card and explain to a representative that you need some help in learning how to find a doctor and set an appointment.