When is best to test

[ThatBusyGoldFox]

I had unprotected on 18th March, but don’t know if it’s still early for hcg to show or be low?

Do you mean 18th February?

Assuming you mean 18th Feb, for most people it would show up by now. Taking averages, if you ovulated 5 days after the unprotected sex (the longest sperm can survive) you would be 13 days past ovulation now. The vast majority of people would have a positive now. If you leave it 3 days you’ll get a definite answer though just to make sure.

Do you normally have regular cycles? When are you next due a period? When was your last period?

If you mean 18th Feb then you’d likely have positive test by now, but wait until you’ve missed a period to be sure if you haven’t already