TTC #3

Dinika • I'm 31 and I've been with my husband for 15 years and we have 4 children; 3 boys and 1 girl.
Hi guys! I am currently trying to conceive baby #3 and I was wondering how early u can take a pregnancy test or wat u guys feel is a good time to take one...I started ovulation today thru Sept 6. And my AF is expected sept. 18th. When do u guys suggest me to take a HPT? P.S I'm very impatient lol