Would a recently implanted egg show up on l ultrasound? Needs answers please.?

a newly impanted egg would not show up on u/s to my knowledge-I had either a chemical pregnancy or very early miscarriage around 4 weeks a while back and they told me at 4 weeks pregnant, you wouldn't be likely to see anything on u/s. By 5 or so weeks you can see a gestational sac forming. if they said you may be mid cycle, go ahead and have it can't hurt if you have conceived and will increase the chances if you have not. good luck.