‼️‼️ Situation ‼️‼️

Ok so this may be kind of long...I have 3 children ages are 9,6 & 3..just found out about baby #4 a couple days ago. My oldest 2 boys have a different father, who committed suicide 6 years ago. My youngest, is my daughter and the baby I'm carrying now is by her father. He is denying this one because I had slept with another guy twice back in September, September 13th and like a week after that to be exact. So here's the thing, I was on my birth control patch when that happened...it should of never. And plus I got my period on October 10th, which means I ovulated the week of the 24th. Me and my daughter's father had sex the whole week I was ovulating and I'm only 4 weeks...but he doesn't seem to comprehend that it can NOT be the other person's. WHAT DO I DO⁉️⁉️⁉️ WE have been through so much he has been there for my boys, and we have had our ups and downs. He is so hateful to me, calls me names like whore, slut, bitch...now mind you he has 2 children himself between our daughter and this one with another female while we were still talking...‼️‼️‼️ ADVICE‼️‼️‼️..SORRY FOR THE LONG POST...