I have tuberculousis if I dont take medicine what will happen

if I dont take medicine for treating tb what kind changes will happen in my body. what will happen to me

Your strain of tuberculosis bacteria will become resistant to the meds you were taking before. Because now those that were still alive while you were taking the drugs were the most resistant ones. The idea was to continue taking meds until they all die. Now the surviving organisms will multiply back and those are more resistant kind. Start your meds right away.
Also instead of asking on this site you should ask this kind of questions your doctor, or search online. Medical questions are well answered online.