I confessed my feelings, but what now?

My crush and I have become close friends over the past few weeks, but yesterday, via whatsapp, I decided to confess that I like her.

She said: "I was always in doubt if you like me or not. I don't know what I feel, but if you like me, I like you too" (I admit that I didn't understand what she meant), and then she sent a heart emoji. We talked for a few more minutes, but we were speechless by all that had just happened and decided to end the conversation.

Now I don't know what to do: should I text her today, or wait for her to text me first? Should I stop talking to her for a few days? What is my next step? This is the first time I have confessed my feelings for a girl.
I confessed my feelings, but what now?
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