Missing lab for exam

Title. I’m taking Bio 2 Lab right now and next week is the pig dissection unit (which seems to be a pretty big deal). Due to scheduling conflicts with an exam, I can’t attend my lab so I’m trying to schedule a make up. My lab coordinator isn’t responding to my emails so I’m kind of freaking out rn because I’m trying to get a specific day (I need to leave ASAP after my exam due to some personal stuff). Would it be weird of me to email the TA for the section I wanna make up my lab in or just walk in and explain my situation?