em i diabetic?

Hi everyone! I posted i think 2 months ago regarding my problem ... i am losing weight from 175 to 165 for 6 months, i do exercise 2-3 times a week 30 to 45mins and didn't change my eating pattern... and i am thirsty most of the time... sometimes i feel really really thirsty but sometimes i dont feel it... and i have constant stomach pain...

Oral Glucose Tolerance test is normal as well as my HAc1 (?), my doctor told me that i have a good readings... but i feel thirst most of the time, but sometime i am not thirsty... what is this all about? anyone could help me?

any other test that can confirm me from diabetes? or ist other disease?

yes, i am planning an appointment to my doctor.. my glucose tolerance test and ha1c was very good , the test was done only last april.. i still remember my doctor told me that GTT and ha1c can diagnose me really if i am diabetic so when the result came to normal I AM VERY HAPPY... but later this month i feel thirsty all the time and i worried about it.... some of my friends told me maybe its another form of diabetes the diabetes insipidus.. is't dangerous too? but some of my relatives maybe its because i am acidic because i am addicted to coffee and i have frequently have stomach pain...

Thanks, Ms. LanieG., one more thing may frequent thirst come and go, yesterday i dont feel thirsty the whole day until today. My thirst feeling starts when i feel hot im my stomach area (center) then through esophagus.. but i is not constant, sometimes 2 hrs then it will gone. it really depends but my frequent urination continues every 1 to 2 hrs... may i know what thirst describe in diabetic? ist constant?

ok thanks a lot Ms. Lanie G... Today i dont have any thirst but i experience frequent urination... i dont feel week at all.. i have questions, how long will a diabetic loose weight and how drastic it is? last december 2011 my frequent thirst started, i am not bother because that time of september i was confine in the hospital but my fbs is normal so i dont bother about diabetes. Until january of 2012 , i was bombered by heavy thirst almost everyday so i decided to consult my doctor, my fbs was 120... my doctor told me that i am in the range of prediabetic so he advice diet and exercise, i did exercise for two months and avoid sweets also i take bittergourd supplement (its not medicine), its bittergourd in a capsule... in my country you can take it even without prescription and it is good also for non diabetic.. but my thirst is always come and go until i came back to my doctor to check my blood sugar again. my test is OGTT AND HA1C... and its normal... that time i came very busy with my work i forget about those illness.. i still dieting and exercise but many of my colleages told me that i am going thinner, i was surprise that i lost 15lbs.. now i am experienceing again those thirst... but i am planning to gain weight ... thanks ms. lanie for lending an ear.. :)