Really need support

Kr
My fiance and I have been trying to have a baby for almost a year. We had everything right, all the hormones, ovulation, inter course, vitamins, etc. Well I believe myself to be prego but I'm terrified to test. About a week ago I found out he's been cheating on me with his ex. Me and my daughter walked out and I'm at my parents 2 hours away. I'm sure that I am but I'm scared. I'm a wreck, I miss home.. I was a stay at home mom and I had my daughter And our furr babies. Idk what to do, imso broken. Please, any advice or support?