Thought it was AF, but maybe not?

Hello all, so I’ve been TTC for about 3 months now, and I thought AF started yesterday but my periods are normally pretty heavy and I usually have bad cramps the first day or so. But this time I have zero cramping and my period has been very light.. so I’m pretty confused. This is the predicted time for my AF but it’s definitely not the same as my usual.. not sure what to do.

PS I took an HPT yesterday and it was negative.

SO CONFUSED 🤷🏼‍♀️