I bought cagri a while back and use is sparingly but have recently came across something about needing to check ph levels in Cagri... What do I need to do and what am I risking using some without checking?

I took my first dose of Cargi .25 yesterday evening. My tirz dose is due today ( I split dose into 2 x a week). After reading so many peoples experiences with Cargi on reddit I wish I would have started at a smaller dose. I also know it can take 1 to 3 days before it "kicks" in and I definitely don't feel it yet. I'm worried about how sick some people can feel ( nausea, vomiting, fatigue) so now I'm scared to take the tirz since I know the Cargi hasn't kicked in yet. I have a big event Saturday and am feeling worried but also don't want to mess up my progress.

I noticed the file says can be taken with tirz. Does this mean I can add it to the same injection, mixing them or does it just mean I can take it while also taking tirz?