8 days post trigger shot

Morgan • DH and I are expecting twins 1/2016, we have a 5yr old and an angel 10/2014 💜
So I am just curious if it is too early to take a pregnancy test. I am having a few symptoms but since I am new to fertility treatments, I am not sure how long the shot will stay in my body to give me a false positive. Of course my dr office closes early today 😒 Any advice would be appreciated. Thanks!