I am 22 years old female, I had vomiting, loose motions and mild dehydration. My doctor gave me tab. Zofer (for 2 days, tab o2 (for 5 days) and cap. Yogut (for 10 days. My loose motions stopped after 3 days so after consulting my doctor, is stopped o2 tablet. But it has been almost 7 days, whenever I drink milk or anything containing milk (like ice cream, buttermilk or tea, I have a weird after taste in my mouth. What can be the reasons, also, is this permanent?