Hi mommy. There's really no wrong or right answer for this, only what you believe will be the best for you and your family. You'll most probaby feel mom-guilt eitherway-- either for not being there 100% for your child, or not being able to contribute financially to the household.
Personally, sinabi ko na sa sarili ko beforehand na gusto ko maging full-time mom but as it turned out, na-hire ako during my pregnancy. Overall, I believe it turned out for the best. I just do my best to spend as much time as I can with my family, and to make the most out of it. Sa totoo lang, sobrang nakakapagod ang pagiging full-time mom. I actually feel that my time away at work is my rest time (Extra Salute to full-time moms!)
I suggest to talk it out with your husband and see what your options are. Regardless of your decision, I'm sure it will be a huge sacrifice for you but as long as you believe that it's for the best, then you'll be ok. *Hugs!