Help please!!!!!! ?

Tre`sor • I became a mother to a beautiful baby girl named Avery Brooke on 10/07/15!!! Baby #2 due 09/21/16
So my highest chance of conceiving was Monday and I did BD Sunday and Monday night... Because of my work schedule my fiancé is too tired to do anything tonight. Btw when I BD Sunday night, I received a negative opk and on Monday afternoon it was a solid smiley. Do I still have a good chance of conceiving this cycle?