Need advice??

So I think I started my period today but yet it's really light plus this app says my period is not due for another 6 days. I just don't know what to make of it. I took a test on April fools day because my father was picking on me saying I was the reason for his weird cravings (my dad is like a messed up pregnancy test sometimes it's like his taste buds know it lol) Well the test was negative (before anyone takes that the wrong way he does not know we are ttc)