I had a dream that I got a bfp and then a few other things that could be a sign happed.

So 8 days before my period I took a pregnancy test for the heck of it and I saw a super faint line, it looked like it only went half way up though, so the next morning I had a cup of coffee and I took another one it was negative.

I’m having constant headaches and a odd heavy feeling in my uterus and dry CM which is not normal for me And I’m hungry all the time.

Would drinking coffee make the test not pick up the hormone?