My husband possibly has a child... And i just lost mine

Me and my husband have been trying to have a baby for 5 years. I have 3 miscarriages and 4 failed rounds if IVF. At the beginning of may I gave birth to a stillborn baby girl at 39 weeks.... I've been so fucking broken... And now my husband has received text messages from a women claiming he's the father of her deceased sisters son. Her sister died from an infection she got after having open heart surgery. And what shocks me is I KNOW THE KID SHE'S CLAIMING IS MY HUSBAND'S! He and my younger brother are both in boy scouts together. The child is 14. Me and my husband have been been together for 8 years so it was definitely before we were together. This child has been over our house when my brother was over. I never saw his mom because she always waited in her car to get him. According to my husband she was an ex girlfriend he dated when he was 17 and she was 16. My husband agreed to a paternity test and I asked my husband what happens if it comes back he's the father... My husband said then he might have to take him in because the boys aunt has 8 kids and can't take on another. That or he goes into foster care..... This is too much... I just lost my baby and now this!

I didn't say we would put him in foster care. Just that if we didn't take him that's where he would go.