Was just reading some of the comments off this... some at-home pregnancy tests will give you a positive BEFORE you've even missed a period (they're getting more sensitive) so ask your pharmacist which is best. If you're a week late, there should be no reason an at-home test wouldn't be accurate. If you're like me, you won't be able to work out as hard as before you were pregnant. Just do what you can, and keep in mind your exercises won't be as intense as before you got pregnant. You will get tired much faster. I picked up this book and I like it. I mostly follow the exercise plan laid out, with the few changes more suitable to my fitness level. It was a good buy.