AF Due Sunday 5/24! BFN and SUUUPER sad. Support?

Been trying for MONTHS! I feel like AF is coming, super bloated, really tired, really hungry, slight sporadic abdominal cramping... BB's are not sore as usual this month... Last night I felt nauseous and was dry heaving (TMI)... Feel fine today. Tested yesterday afternoon and got a BFN. I know it was a little early, but I wonder if I am making myself sick with anticipation. Do you think PG is still possible or do you think AF is knocking at my dang door again?