7 years of extra marital affair of my husband

I am a 37 year old married, muslim housewife . I am married for 7+ years now. I have two son aged 7 and 5 years. During my first pregnancy in 2015 I came to know that my husband has an affair with a hindu woman who is a govt school teacher. My husband confessed that time that it's ten year old affair and i cannot leave her. However, our families got involved so he lied and told me it's over. Once again I got pregnant in 2017 and found that he never ended the affair. It was still going on. This time i wanted divorce but my family didn't support me. They insisted that i stay with my husband and things would change once I have my delivery. Most unfortunate part of my life is I am financially not independent. I have to stay at my parents place or else be with my husband. Well, I thought it's been more than 7 years now so he might changed. But it's my fault as I stopped keeping a check on him. After pandemic when the school began this year. I noticed he is coming late night every single day so i doubted and checked his phone two days back and found something which confirmed his affair to the same cheap woman. I don't know what should I do to these two people. I feel like killing myself but what will happen to my boys...