The bottom line is that divorce tends to be ugly and expensive. Almost always, both parties lose. You may feel, justifiably, that you have lost so much and I bet you are correct. However, that does not mean your husband gained.
As a ballpark figure, you could check Zillow for the house value, and you probably know the mortgage balance. Keep in mind that it costs money to sell real estate, so on a 250K house, 18K or so in equity is pretty much zero.
You bought the house only a short time ago. Did you have a large down payment? Did you have a short term? Is this house in a hot market? Answering no to those questions makes it likely that there is not equity in the house.
This may be going a little to far, but you sound scared. Your best bet is to make a plan to move forward and co-parent those kids with their father. Take care of basic necessities, (food, clothing, and shelter) then move on from there. Having a plan will remove much of the fear. Once you see your plan working, an increasing amount of fear will be removed from your life. My prayer is that you soon wake up believing in yourself.