Back to work?

I'm having a hard time making a decision about going back to work.. I'm a first time mother and my son is 5 weeks old so I don't have much time left of my maternity leave. I've gone the last ten years always having a job and sometimes 2 or 3, I always hated not working but now I'm in a different situation. I love being home with my baby but I'm worried about our finances.. we believe my fiancé makes enough money for me to not have to go back to work (I've always been an overthinker and I worry about everything) plus we have a decent bank account for a short backup if needed. One of my hesitations about going back is that my baby is currently ebf and I'm not sure that I will be able to successfully pump what I need to at my job. I only get 2 breaks, 1 ten minute and 1 twenty minute, and there is no place of privacy for me to pump unless I go out to my car. I'm not sure that I'm ready to leave him yet either, I love the bond that we have and I just can't see leaving him with a sitter or daycare, not to mention at least half of my paycheck would be going to said sitter or day care. I'm just not sure what to do and nobody will even give me their opinion..