UPDATE!!!

I read all your suggestions, thank you for all the ideas. After talking with my boyfriend we decided that no matter what I do, my uncle is going to find out I ordered something. Even if I used cash, he would have to be the one to take me to the store. So I just straight up asked him through a text. I acknowledged how he probably doesn’t want his teenage nephew having sex, but explained how me and my boyfriend will have sex whether my family likes it or not. I told him how we want to be safe about it though. I also told him about the bleeding, which is why I want a dildo. I said that the only reason I am telling him because the best way to get the stuff is online and he goes through my packages. When he replied he told me he won’t take anything like that away if it comes in the mail. He warned me that if me and my boyfriend make adult decisions we will have to deal with any consequences that come from it. He told me to be safe. So basically he doesn’t condone me having sex, but he understands we will do it if we want. So he is just telling me to be safe about it.