Is 18 too young to try to conceive?

No: Once you start having periods it means you are ovulating and your ovaries are producing eggs waiting to meet a sperm.

Think carefully: Being a parent is a huge responsibility and the decision to become a parent should be thought about carefully. Young adults tend to make choices without thinking through all of the consequences, and sometimes even become parents unexpectedly. Regardless of your situation, avoid making any hasty decisions and discuss with your family doctor. Use contraceptives until you are sure the time is right.