hun, your late! your a week late.
A test would show up accurate.
You said "yet, on april 23rd had unprotected sex" which would mean, you'd be almost 2 weeks along, not 9days.
It takes 1 day for sperm and egg to meet,
7-10 for the fertlized egg to become implanted in the uterus
2weeks is when the embryo has a layered disc on the uterus wall.When the mother misses her period.