I need help im so confused?

okay im pregnant. my doctor says im just under 2 months. and every time i go on websites and try to find out my due date it say in march but i think its in april..they keep saying that i must of conceived in june. but i never even had in june and in may i had dha 24th...and in july i had on dha 6th..so im think i concieved in july and since she says im almost 2 months dhats just about correct. right? so do u think i conceived in july? oh by the way. my last period was jun 15th! and no its not two different guys and im not trynna find out who the baby daddy is..thnx