VVFL 15 dpo

So I was 15 dpo yesterday, period suppose to start today. I usually get bad cramps and sore boobs a week before but I haven’t really had anything and my boobs are hardly sore. I took a test last night at 10:30, there was a vvfl almost instantly I went to bed then woke at 5 to pee again because I have been peeing a lot and been very tired. And the 5 am test was nothing, not even a faint line. The positive has only darker but there is still nothing on the negative. I’m confused and was very emotional before I took the test, it’s actually why I took it.