Help me :(

Irene
Af is about 3 days late. I'm really nauseous and getting hot flashes. I was the same way with my daughter. I've been getting cramps here and there and bad back pain.. which I also had with my first pregnancy. ..but the cramps were severe.. all the hpt I take up until this morning are negative. .is it too early? Or does this baby not wanna show itself to me yet?