If you haven’t tried to conceive before, you’re currently trying without success, or if you started without doing your anatomy homework, it may be time to brush up on some fertility basics.

It’s only natural to have an endless amount of questions once you begin trying for a baby. After years of deterring pregnancy, switching the tables can cause some confusion.

Here are some common questions:

  • How do I know when I’m ovulating?
  • How long will it take for my birth control to stop working?
  • Should we be doing certain sexual positions?
  • Should we be having more sex?
  • Is lubricant safe to use?
  • Should I change my diet?
  • Should I exercise?
  • What is the best age to try to conceive?

We’ll give you a sneak preview to one of the answers:

Studies show that obesity can significantly affect ovulation and reduce fertility. By exercising daily and maintaining a healthy weight, you will increase your chances of getting pregnant. “Whether that is a brisk walk, short run, or workout class, exercising consistently will positively impact fertility and weight loss,” adds Dr. Hirshfeld-Cytron.