Hi all, I'm sorry if this isn't in the right place!

I found out that I'm pregnant a couple of days before we found out my mom has non-hodgkin lymphoma. I haven't said anything because it really didn't seem the right time, but I know I'm going to have to tell people eventually and I don't know how long to leave it. I know that the news is not going to go down well at all and I don't want to cause her even more stress and pain and upset on top of the diagnosis, but she starts chemo in a month so I'm worried if I wait too long it's going to impact her health which is incredibly unfair of me to do too as I'm meant to be supporting her.

Any advice would be greatly appreciated, thank you!