had a positive yesterday now showing negative? Please help girls is this false positive? I’m broken hearted

Took a pregnancy test last night around 7pm after not drinking or urinating for hours, showed a solid pink line. I then took a clear blue digital after drinking and peeing which then said not pregnant Took another pregnancy test this morning which was negative?! I’m so confused and sad, does this mean I’m not pregnant? I don’t know what to do please help xxx