You can do non-invasive paternity testing through genetic foetal DNA while pregnant. My sister had it done in 2016 when she was about 22 weeks pregnant. She had the results within about a week. If you’d like to inbox me I can give you some more information on the specific company and cost if you’d like 😊 Hers wasn’t extremely expensive like some labs.
@mumma_of2 I've done so much research on prenatal ones but they're so expensive and i don't have that kind of money atm so ima have to wait until after baby comes .. i just don't know if they do them right after birth or if you have to go thru a process , thanks for your response 😊😊