Nervous

Okay so AF was supposed to come yesterday. She still isnt here and i havent had my usual "week before cranping" however, what i am having is sore breasts, particularly my right one and theres a slight bump in it. Also, im hungry ALL the time for salty stuff, and moody a lot over small things. Heartburn and nausea are here as well. Im wanting to believe that it may FINALLY be my turn to concieve a blessing, but am worried that im just setting myself up for disappointment. Do you think that i may be starting AF soon and am so desperate to get pregnate that im focing my body to exhibit symptoms, or do you think that i could be preggers? Im getting a test tonight but i want to be prepared for the negative just in case.