What happened to my skin after using ZO Pigment Control + Blending Creme 2% hydroquinone?

I used this creme for the first time on Monday and had a fever on Tuesday where my whole body was hurting. Now, I feel better but my face looks dull and yellow. I used ZO at night and sun screen the next morning so I really don't know what happened to my skin. Here was my routine:

August 4

🌅 MORNING: (7 AM – 12 PM)

1. Cleanse

2. TruSkin Vitamin C Serum (3 - 4 Drops on Face and Neck)

3. Sunscreen (Face, Ears, Neck, and Arms)

🕑 AFTERNOON: (12 PM – 5 PM)

Reapply Sunscreen if Outdoors

🌙 EVENING: (5 PM – 11 PM)

(MO, TH ONLY): Zo Night

1. Cleanse Face and Arms

2. ZO Hydroquinone Cream (Face, Arms, and Dark Spots)

Never Layer Retinol, Palmer's, or Vitamin C With Zo!

(TU, FR ONLY): Fade/Glow Night

1. Cleanse

2. Palmer’s Fade Cream on Face, Arms, and Body

(WE, SA ONLY): Retinol Night

1. Cleanse

2. The Ordinary Retinol (Face Only)

✨ Arms & Body

1. The Ordinary Retinol on Arms and Body (Tuesday, Wednesday, and Saturday Only!)

Do not combine with hydroquinone!