So I’m 33 and I had my mirena removed on June 18th . I have 2 children already but trying for 3rd idk why but I get confused with the whole ovulation thing and when to have sex to be honest idk sometimes when my period actually ends like last month it was about 5 to 6 days and like this month it was like 3 to 4 days ... I just get really confused I know I probably sound really stupid but being honest . Anyway I had unprotected sex this morning it’s 4 days before my fertile window. Could I get pregnant ?? and how can I be sure when to have sex so I can conceive considering im so confused and lost every month with this whole process ??? Help please !!!