Do I test again..

Tiff • TTC #1 ❤️
So my period came a week before glow said.. I was on for about 3days come off for
A day then back on .. But only when I went for a wee? Then back off then when I went for a wee following day was a tad...should I test. 
I took a test the first day I came off and it was negative not even a faint line.. 
But i don't get why my period is doing that?! Should I re test would it still be too early?