Feeling so low 😞😞

So I was due on today, but I haven't came on. I've done tests but they have came back negative. About 5 days ago my boobs were killing and I was getting cramps. But now I have nothing. I usually get cramps the day my period is due, and I'm usually really moody! But I have nothing.

Just so confused with the tests being negative. Just feel like I'm out. It's so frustrating 😔😭