Dishonest husband...

So ladies I need some real advice, not just leave. My husband and I have been together for six years and married for two. Two women messaged me within 2 days of each other saying that my husband messaged them and was hitting on them; wanting to hang out, sexting etc. I confronted my husband and he swears it wasn’t him. I want to believe him but my gut says he did it. I wanted to try and take a break but I have no where to go. About 6 months ago my husband told me to quit my job and help my sister out by watching her sons so she could go back to work, but she only pays me about 150 a week to be there about 50 hours each week, so my husband is our main source of livable income. My sister has 3 kids in a two bedroom house so there is literally no room for me to stay with her and she is the only family I have near me. On top of that my husband is and epileptic so I am his ride to work and my sister picks him up since they work for the same company but in different departments.

My husband said those messages weren’t from him but refuses to go to marriage counseling saying it’s a waste of time. And since then has been rude, manipulative, and does not talk to me, look at me or want anything to do with me. This was about 3 weeks ago and I can’t continue to live my life like this. What do I do!