Gender-deciding to reveal or not

I’m pregnant with my second baby and my husband and I agreed we would not find out the gender. We didn’t find out with our daughter and it was a great surprise! We have been super careful when going in for ultrasounds and have told each tech/ doctor that we do not want to know. I had to go back for a second anatomy scan last week and the doctor released the report and guess what..the gender is on there. I’m so upset because I’m the one who really didn’t want to know! My husband is more than okay with a surprise and I’m not sure if he would find out if it weren’t for me. I know my mom and Family would not want to know. So, now what?! I’m not sure I can keep the secret until March 27th due date and it’s not something I could take to my grave so I would tell them I knew post delivery if I keep it a secret. Am I just lying to my family or is it an act of love to not tell them? Help!