Baby fever

Hi guys! So I'm on my moms account which I guess is weird but I need people to talk too. So I've been with my boyfriend for almost 2 years. I lost my virginity to him around 6 months in to our relationship. Earlier this year I had a few pregnancy scares that he doesn't know about and I'm on birth control but we don't use condoms with it which is really stupid I know. But recently I've been having some serious baby fevers. My mom had a stillbirth last year in July and is now expecting twins which is definitely a blessing. Is it crazy I want to have a baby of my own even thought my mom is expecting twins? I'm 17 and my boyfriend is 20(don't judge lol it's not that big of gap) anyway, He wants a baby too... Just not right now and I totally understand!!! God but I want a baby sooooo bad!! Hahaha I guess I can wait a few years but it's so tempting! Lol