Almost All Foods Taste Bitter To My Tongue For The

Almost all foods taste bitter to my tongue for the last two months. I was on steroids and antibiotics for two months before that for Asthma related issues. My Pulmonologist does not think it is the medications I take. Also, my primary care physician does not think it is due to blood pressure medications I take.
I lost interest in all foods and have to eat just to survive. Can you help with diagnosis and cure. I will be grateful .
Saras.