Am I overthinking on her contacting me?

So me and this girl been talking one a month. Been on 4 dates. She even drove to the beach on Thanksgiving to spend it with my family. We’ve kissed and only done oral sex. Past couple of days, her contact been decreasing. Taking long to reply and dont answer my calls. I feel like she’s losing interest. We texted today, but the it was short. I told her to give me a call whenever she’s free.

Am I overthinking this situation?

Am I overthinking on her contacting me?
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