Baby or New Job

I just started a new job a week ago. The benefits don't kick in for a few months. I'm afraid of getting pregnant now because I have just started the job. I've been so used to working in fast food restaurants and I finally launched a great office job making double the money. If I want to take a day off i have to notify the owner and he has to cover me, which is why I am scared to get pregnant right away because of the days off I might need in the future. I also don't want to wait to get pregnant because my boyfriends mom is willing to take care of the baby while I go back to work. But his brother has been wanting to have a baby with his girlfriend and would want the mom to take care of it as well. What do I do????? Please help!