When I find out

Just asking a head of time. My doctor is having me take a fertility pill this month and he says I should be pregnant in 3 to 6 months. I read reviews on the pill and most people said they got pregnant in 1 to 2 months. So my question when I find out I am pregnant do I surprise my husband? If so how? And we have decided when we go to tell out parents we are he is going to wear a shirt that says something about him being a dad and me something about being a mom and take them out to dinner to see how long it takes them to notice. What do you guys think?