If She cancels on you saying she is sick, does that mean it's over?

I have been going out with this girl for over two months. This Saturday was supposed to be our seventh date. Out of nowhere, she texted me her friend was sick and asked her to take care of her. So we planned to go out Sunday. Then Sunday comes and she said that she got sick too so we'll go out next week. This is the first time she canceled on me. I was all prepared to make my move and kiss her and everything. Now I am worried that it is over. Is this a classic excuse used to get out of a date that you are no longer interested in?
If She cancels on you saying she is sick, does that mean it's over?
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