Like Megan said, when the time is right you will know. In the meantime, just enjoy the ride! If you keep an active spirituality, for example meditating, celebrating the sabbats, journaling… then you will hear the calling.
I always felt a strong connection to the Greco-Roman pantheon 
probably because of my ancestry but that’s not really a requirement.
If you feel comfortable, you can put in some work and experiment with different Gods and/or Goddesses.
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You can start by finding a culture that you identify with.
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Make a list of reasons why you personally feel connected to that culture.
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Read about it and its religion in depth, find people who can help you understand it better.
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Following your findings, do what you feel you must to practice your faith.