Help!

My fiance and I are trying, and have been since April 3rd. We have had 2 miscarriages since April, and one previous from 2013. Today, i am officially 14 days late (my periods are very regular) 30 days since my last ovulation. I've been taking prenatals religiously since October. As of today I'm bloated, sleepy, very easily frustrated with a very short temper, my nipples hurt, my boobs are occasionally achey, my whole back hurts, and i threw up this afternoon. I've had one faint line test, and one negative...any advice?