Hi K.,
First, I'd like to address where some are encouraging you to start a work from home business. I personally looked at one business that was mentioned in another answer given to you and I still don't know exactly what they do...which means I don't want to do it!
However, I definitely think that if you wanted to start your own daycare in your home that is something that could work for you if it is something you'd enjoy. You don't want to open a daycare in your home unless you love children. I've worked with children for over 25 years and now I am an LCC for Culture Care Au pair, so I have a ton of experience with children and parents who are in a day care situation.
So...if a opening a home day care in your home isn't an option for you, this is what I'd do...
I'd look on Craigslist, I'd ask EVERYONE I know about their daycare provider, I'd be looking fast and furiously to find a replacement for your provider. Get him out of there as fast as you can. You don't trust her and one of the most important people in your life is with her for many hours a day. Is Grandma available until you find someone new? An aunt? A neighbor? Here's a link to home day cares near Sherburne, NY after doing some googling:
http://childcarecenter.us/new_york_homecare/chenango_ny_c...
Last but not least, don't be bitter toward your husband. Keep thinking, "for now I have to do this, but it will change". If you want to stay home, you will find a way. I did. My husband doesn't make enough on his own to support our family, so as you see from my signature, I do many things from home (and I just started another local preschool directory website that isn't reflected in my signature). But I don't blame him. We are a team and I plan to stay that way. Becoming bitter is the first step to divorce and unless you want your son to be with a daycare provider forever with you having no choices as a single mom, you need to remember that your relationship with your husband is first and foremost. How do you think he feels that he can't fully provide for his family? He is doing the best he can and you will be happier if you find ways to show him love and respect instead of pointing out his shortcomings. We all have them! The rule in our house: No one is ever allowed to complain about my husband - not me, not my daughter, and not my mother-in-law who lives with us. He is king of the castle and I am glad to be his queen! Try it, it will change the overall feel in your home. Your husband will be happier, you will be happier, and your son will have parents that love and respect each other.
Best wishes to you, your marriage, and your son!
~P. G.
LCC, Culture Care Au pair
Owner, Portland Preschool Directory
Author, Mrs. G.'s Kindergarten
http://www.PortlandPreschoolDirectory.com
http://www.MrsGowing.com