What does the first week on a GLP-1 medication actually feel like?

For most people the first week is fairly mild since the starting dose is low. Some notice a bit of nausea or fullness sooner than expected, others don't feel much different at all yet. The more noticeable effects tend to build over the following weeks as the dose increases, so the first week specifically is often less dramatic than people expect going in. References: https://obesitycanada.ca/healthcare-professionals/adult-clinical-practice-guideline/

Barely noticed anything the first week honestly, felt kind of anticlimactic after all the stuff I'd read online. Week 3 onward is when it actually kicked in for me.