FTM Surgery Question

Hello! I am itching to go into FtM surgery but I couldn't find enough info on it wherever I look. I'm nor looking to go for a full surgery, just a breast reduction and possibly get started on testosterone. But, I'm worried that if I take testosterone it will ruin my chances of pregnancy? I know this may be weird but I've always wanted to have a baby, myself. So, if I take testosterone, will I not be able to become pregnant? If you're still confused on my story, please ask! I'm happy to tell anyone.