I need advice

My boyfriend and I recently Discovered at the doctors that he has zero sperm count due to him having cancer years ago. thankfully he banked his sperm before treatment so we have to do <a href="https://glowing.com/glow-fertility-program">IUI</a> . . this has been really tough for me I feel like I have no one to talk to considering my mom passed away a few years ago . I just feel so alone about this whole thing . His mom has no idea we were trying to have a baby or what the situation is right now so I was thinking about telling her but I don’t know how to say it . I know she won’t be mad considering she has 3 grandchildren but I’m just scared . any thoughts Or opinions? Thank you