Just wondering I guess

Anybody ever felt jealous that their significant other had a child in a previous relationship? That is if you don't have any kids of your own. I guess I just always imagined myself falling in love, getting established, getting married, and having children...never being a stepmom first, if and when we do get married. It kind of hurts that we won't first experience that together. This isn't really a question, more like getting it off my chest and seeing if I'm alone... If so, tips for getting over it ? Does time help ?