No one can tell আপনি if আপনি are a lesbian. Only আপনি can tell. Don't let anyone try to convince আপনি otherwise. There are no "gay quizzes" অথবা tests that can tell for you. I wrote an প্রবন্ধ about this that may help you:
link I know, it's really hard to tell. I think it's easier for guys to tell if they are gay because they tend to experiement more. But আপনি don't need to experiment in order to tell, and I wouldn't reccommend sleeping around.
After আপনি find out, আপনি may want to keep it to yourself অথবা come out of the closet to family and friends. But DO NOT do this if your family might kick আপনি out (unless আপনি have a place to go). আপনি might want to get a girlfriend অথবা just stay single for a while. It's all up to you.
Don't try to change yourself. There are no "gay to straight" programs that work, and there never have been. God made আপনি the way He meant to, and He loves আপনি no matter what.