Should i pick up another job?

Hi all, just want to see your opinion on this one. I’m currently working part time with about 4 days a week, every other weekend. I applied and interviewed w an on call job that required me to work every Saturday n 2 days during the week! I can work out my schedule that i can work at both place. But we just had a 5 month old boy after a long time of trying and multiple miscarriages. Im always a workaholic and now i feel useless w/o a second job. If i take the 2nd job then I won’t have any weekends to spend w my boy/hubby but the finance would be so much better n we dont have to worry about what to buy or not. What should i do! Thank u