Smileypoo, in your spare time, you might want to read Isaiah 58: 1-12. Please focus on verses 5,6,7.
Since you are on medcation, fasting in this case could be that you reduce the quantity of food that you eat, but before you do so You must, I repeat you must consult your doctor and check with him or her to seek expert opinion and advice.
Fasting could be from entertainment an amusement, such as watching TV . This could be an option that you might want to consider.
In any case the best thing to do is to pray and ask the Lord to direct you.
I hope that this may give some ideas to ponder upon. May the Lord bless you and lead you as you seek to serve him with all your heart.