Idk what to do

So i was married for 16yrs he wanted a baby & my tubes was tied ! We payed over $8000 to get the reversed 5 years ago i will be 40 this coming july we have been divorced for 2 years now because i never got pregnant 🤦🏻‍♀️ . I thought it was me because only 5 % of my right to was opened well I have been dating a guy for 5 months now hes great was one of my best friends growing up he has told me he doesn’t want anymore kids & I also don’t IM ALMOST 40 😭!!! IM 3 days late !!! I really don’t know what I’m gonna do & I’m so scared hes gonna run for the hills might i add i have a 21 & 19 daughters .. I’m so scared 😟