What to do? Pregnant again!?

I just found out that I’m pregnant. It’s not that I’m not excited, cause I am it’s just that I’m only 18 and my boyfriend is just a year older. We also have a 15-month year old baby together that we got at the ages 16-17. We don’t have any problems financially, but having another one right now would be really bad timing considering both of us are in college and both of us are working. (I have an internship) I haven’t even told my boyfriend yet and I have NO idea what to do?..