Medication question.

Patient: Ilost my job over a year ago. My regular dr put me on ZOLOFT and I told him this week I did’nt feel it was helping me. He changed me to Wellbutrin,and said to take it for the first 7 days with the Zoloft. I have acid reflux and it upset my stomach. Is that normal to take 2 antidepressants at the same time? The Zoloft is 25mg,and the Wellbutrin is 150mg. A little concerned about this. Thankyou for your help.