First Response HTP

I took a first response test this morning 11 dpo and instantly a line appeared way before the 5 minute marker, it was noticeable but yet to faint to say 100% it was fully pink. With these test has this happen to anyone? I know 11 dpo is still somewhat early. If you held it up in better lighting you could see pink in the line but if you didn't it was hard to tell the color. But it was sooo faint is what I am worried about

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