meds making me sick now?

so i consecutively forgot to take my meds for like 10 days (i take strattera) and now i’m trying to get myself back on a schedule and taking them, but i’m still missing it on some days. i’ve found that on the days that i do take it, i’ll feel nauseous to the point of throwing up, and i’m wondering if it’s the meds. i’ve also been having bad acid reflux, and sometimes i’ll vomit because of that too so idk if it’s just pure coincidence, but i’m just so confused. like is it possible for my meds to start making me sick just cuz i missed them for awhile?