How do I tell them

Hi everyone,

I'm currently 7w3d and so far I'm not enjoying my rainbow pregnancy. Not because I don't want the baby, or anything like that.

I feel guilty. I have a SIL who struggles with fertility, my brother and her have been getting treatment and trying for a few years for a baby. I'm currently pregnant with what will be my 4th but I've had 9 miscarriages, 5 of them in 2020. I feel guilty that I'm pregnant and they are still trying, I don't know how to tell them without causing more hurt to my SIL. I know she'll be happy for us, but I understand that she'll also be hurt. She doesn't know my history of loss. I only know about her struggle because my brother found out about my last miscarriage that ended with needing a D&C he found relatability in my loss, and their struggle.

I want to tell them I'm expecting after 13 weeks but in a way that won't cause my amazing sister in law any further heartache. I talk to my therapist about this and I just can not think of a sympathetic way to tell her and it's making me feel so guilty and miserable. I want to enjoy my pregnancy. This will be my last. I want to enjoy every minute, but I can't because I feel like my miracle will cause my SIL heartache. I'm telling the rest of my family and friends with a game, but I feel that's not sympathetic or supportive to my brother and SIL. I've thought about ways to just tell them in person gently, but nothing I've thought of seems good enough for my SIL. she is such an amazing person.

Any advice is greatly appreciated. Thank you for reading.

Update: thank you all for your advice, I am so sorry for the struggles some of you have faced, and the brutal ways some of you were told of loved ones pregnancy's ( not gonna lie I'd probably never forgive my SIL'S if they humiliated me either). I will be reaching out to my sister in law this week and asking her if we can get together over the weekend. I finally got to see my miracle and for 8w3d everything looks as healthy,and is growing as properly as possibly seen at this stage. Again thank you all.