why?! so unfair!

Went to the Dr..and baby has no heartbeat...dr. Gave me my options..miscarry naturally or with meds.... I broke down... What went wrong ?? Why? So I went home tryin to be positive and convinced that they could have missed it .. Then I went to the bathroom to pee and then my lil baby in the sac dropped in the toilet....baby left me at 7w5days  I just don't understand I'm sooo heartbroken... I just don't know. What to do or say.  I feel so empty.. How could o love someone soooo much and just lose it... I feel soo numb...... I can't stop crying i missed "Dot" so much...(that's the nickname we gave the baby during the first ultrasound ).... I want my baby soo bad but there's sno way to get Dot back.. Its over , the babys gone...i feel soo sick and i want to wake up from this nightmare ... last week i started writing a letter to the baby every few days and i can't even look at those letters......just wanted to let yal know...just pray for me please...