Baby Fever

I need help. I am 18, in college, and in a relationship. I have had baby fever for a couple months now. I have tried being around babies, but it only makes it worse. I try to avoid coming across baby clothes or baby anything, but it seems almost impossible. It has recently gotten so bad that I cry just thinking about wanting a baby. It’s not just the feeling, it’s everything from the smell to the sound. I babysat my two toddler siblings multiple times a week, every week since they were born, so the whole dirty diapers and screaming/crying doesn’t scare me. I have discussed the situation with my boyfriend who is 20, but we both want to wait until after college before having kids. I really need ideas on how to make it go away.