Going crazy.....

Since about 5 dpo I've had nausea and thrown up twice. Once at 2 am and it woke me up, and once this morning after i ate breakfast. I got a BFN at 10 dpo/yesterday. Just trying to keep track of everything at this point. Im due to get af in 4 days. I have felt exhausted by 7 for the past several nights, then can't sleep when i get into bed. If im not pregnant, im going to be completely shocked. I just have a feeling. Anybody else?