Trying to conceive

Yay ok so I've been off birth control since July 10th I was waiting for my period to come at the end of the month  but it wasn't coming I gave it until the 30th and it decided to come! Never thought I'd be happy for my period but now I will be fertile soon!! Everyone told me that I need to get my period first in order to do this so I did!! And it came the same month I got off bc so hopefully that means something good.. It only lasted 3 days so I was shocked cause it usually last longer. I've had sex like 6 times in July but I took a test and it was negative so hopefully my body is all good now since my period came and I can try for this month!!