<human>: Can you summarize the given text in a few sentences?

Hello. I am a 17 year old male, and my crush, and my potential future girlfriend is 15. I am a senior and she is a sophomore. We both aren't bothered by this. We hit it off pretty well, and I was planning to ask her out officially next time we hang out. 

The problem is, the last week or so she has not been in school, and has been out with a migraine because she received a concussion. Even so, we continued to talk via text and actually calling each other (considering we lived ~6miles apart and don't have rides)... but these last 2-3 days any conversation we were having just...died off? We were having full fledged conversations about everything while she was just in bed, we would kinda of flirt over the phone or text, all was well.

These 2 days however has been...nerve racking...like I feel as though I did something wrong? Her texts went from paragraph responses to one word answers "Yes, no, haha, yeah, lol"... and I'd try to initiate conversation with no luck. Conversations would just die off and we'd stop talking entirely for hours.

Normally, this wouldn't bother me, but since she, for the past month-2 months has been engaging and uplifting, talking about life and everything that was going on, these 2 days just feel...weird...like I said or did something wrong, when really...I haven't...I've been myself.

I have wondered if she just isn't in the mood to talk, which is fine, but it's just making me very paranoid like I killed all chances with her now? I'm probably over thinking this entirely, but I figured I'd ask. I also asked her if everything was okay, if her head was any better or worse, and she said she's "fine" and her head is the same...so I don't really know.
<bot>: Paranoid that a girl I like is avoiding me because she might have suddenly lost all interest in me for whatever reason.