Sir, when I do the test it says that I am in stage 3.8 when does that mean I will have my growth spurt? I am currently 150 cm and I haven’t grown for 4 years. I am 17 years old now.
If you are not exaggerating, then you are saying you reached 4’11” (150 cm) at the age of 13. This would be unusually early to reach your adult height, even though it is below the average height for males (5’9″ or 175 cm).
If you haven’t grown in height in four years, then that would indicate you are past stage 5, but you are saying you are in stage 3. Since I can’t see you, I can’t explain why your situation doesn’t sound normal. I can only suggest that you talk with your doctor about your situation.