Anxious...

Ok so I'm not familiar with all the shorthand terms so forgive me... Had intercourse on a 28% chance of pregnancy (8th of Oct). Multiple ejaculations.... AF due on the 23 but no signs or symptoms and PMS is usual very indicative. Yet nothing, so I tested on the 21 and got a negative... What should I think or do? So many mixed emotions... No spotting or cramping!