I have not had my period yet it was supposed to b aroung the 5th today is the 23rd, but i am not regular!! I have nausea when i lay down at night and when i wake up in the morning. I have a burning sensation in my stomach and i have pain that feels like my acid reflex!! I also have headaches that i get as soon as i wake up in the morning!! I think i am uriniating a little more thatn normal i have been crying a little more than usual!! I took a preganancy test about 5 dasy ago and it was negative!! Could i be pregnant?