Why do I feel like this ladies, i need ADVICE!!

Good afternoon ladies, I need some advice. So I just started dating this new guy and he's great, very responsible and caring. Well we weren't very careful when having sex and lately I've been feeling multiple symptoms such as heavy bloating, no cravings but always hungry, occasional cramping in lower abdomen, nausea 99%of the time, VERY moody... my scheduled a bit off so I havent been sleeping well either. I've taken a test and got a BFN that was on Friday at 2 DPO. Am I tripping, am i pregnant or is there something else going on?

Update: I also am more out of breath than usual