Cycle buddy needed

Nicole
Hi ladies, My name is Nicole and I am 28 yrs old. This is my first month ttc! I have a 3yr old daughter and a son that would've been 5 but lost him due to an incompetent cervix. Af is due some where around the 11th or 12th. I have took one test on Monday it was negative but I read another post saying that you should wait 10min after before throwing the test away... Is this true? Because I threw it away once it said negative. Any of you ladies ttc that has already tested or is still waiting?