3-4 Bowel Movements

Hi,

usually i used to have 1 BM every day.couple of months back i went see my doctor regarding polin (pollen) alergy (allergy) and he priscribed (prescribed) allegra-D and gave a shot for allergis . he said have some infection in my ears and gave Z-Pack (Antibitic (antibiotic))
after taking that my loose BM was like 6-7 times a day.I thought it is because the antibotic (antibiotic) ,it will be all set in week or so.
after a week still have 4-5 loose BW , i called my doctor and explained him about this he asked to use IMODIUM (immodium) .i tried it for 4 days no change in my BM after that my doctor prescribed some tablets i forgot the name copay expensive i used it for 7 days i had 1 BM a day it was thick once i finished the cource again i am in same thing but only 2-3 BM whch is after every meal.then my doctor did blood and stool test and the results were fine and asked me to see gastroenterolgist.