Sorry I thought lmp was 1/14. I would say guy a as well
About 5 days normal every month. But if you say b yiu could find out by a pee test 8 days later?
I'm due October 19th and I conceived on the 14th January , so I think it's guy a
However you would likely need a DNA test the dates are too close.
How long do your menstrual cycles normally last. Guy b is more likely if your cycles are normal
Looks like your conception day was around the January 18 so it's more then likely guy A...hope thats a good thing...good luck and wish u the best girl...