Is it bad for me to work even if my son still 4 months, but i already manage the…

Is it bad for me to work even if my son still 4 months, but i already manage the schedule...everything is settled i just feel aweful leaving him in early age, but this job opportunity is important, I've been looking for a job as a pharmacy Technician, and this is my first pharmacy job...If i don't grab it now, it will gone and i will start over again and my liscence will expire soon... :-( what should I do..My boyfriend told me its okay....we need the money. any advice ladies?