With an indeterminate WB, you should definitely not have unprotected sex. You could just be one of the very unlucky people who just test positive with the ELISA but are really virus free. The only odd thing is the WB becoming indeterminate after being negative.
Have you considered taking a DNA or RNA test? Since that's looking at another aspect of the virus (viral DNA, not antibodies), it would possibly shed some light on your results. I don't think the results would help in terms of your immigration, but it would help in terms of your health outlook. That would be my next step.
Thanks, for your the suggestion. I will definitly go for DNA or RNA test once i go back to india. But coud you tell me that should i go for a second test after three month or should i ignore the result? So as per you i don't have infected with AIDS. Kindly confirmed. It would give me a shy of relife.