When to test

Melanie • Rainbow baby girl conceived with the help of science and born 5/23/17, pregnant with baby number 2, due August 29th
I took clomid days 3 through 7, and menopur on day 9. Had an ultrasound on day 12, and had 1 mature follicle, and 1 more close one. I got the HCG trigger shot that day. That was December 24th. I'm wondering when to take a pregnancy test. I don't want to get a false positive from the HCG shot. We leave for vacation on January 5th. Was thinking about testing that morning. What do you all think?