Work frustrations

Today I am annoyed at apparently a few things that are work related. My boss basically tells me that a big portion of my job is to save the company money. I am fairly annoyed because up to this point he has/will not listen to me about actually raising our prices or adding an administrative fee to our invoices to help absorb some of the rising costs in flooring/building industry. While I do know that he is within his rights to ignore my opinions about his company, I am annoyed because he wants me to help save him/company money. 

I am concerned about maternity leave that is coming up here pretty soon. I mean it will be starting in a month at the latest. (OMG...I can't believe my baby will be here so soon.) And I am slightly worried about the company overall. I mean when I started telling Jeff some of the things that have been changing with making payments and ordering, it feels like I have become so intertwined within the company that it will actually be difficult for Jeff to run the company when I am gone. I mean he even offered to just have me come in for a couple of hours a week so that I can help him still place and pay for orders. 

Today, the major thing that is bothering/annoying me is that really the only way for me to save my boss/company any money is for me to go get certified to be able to handle payroll. Which right now, in my head is basically equivalent to intertwining myself so far into the company that I am never able to take time off. And on top of that thought there is the fact that we just switched our Workers Compensation Insurance to the payroll company that we use, which basically means even if I go and get my payroll certification, I now have to do even more because now I have to change insurance companies that I just switched.

God, I don't know what to do about it. I mean I could take the idea to my boss, but then if he accepts the idea, am I really okay with how much the company actually depends on me at this point, versus the amount that the company will rely on me once I get my certification.