When does it hit you?

Hi, all! I've been using Zep since June and luckily so far, I've suffered no major side effects. However, each time I move up in dosage, I'm terrified this will be the dose that makes me feel sick. I know everyone is different and most people don't get impacted with major side effects, but IF you do or have, how soon after your shot do you feel those side effects? 🤔 Hours or days after?