Stomach Flu or Antibiotic?

I️ started the antibiotic Clindamycin for a toe infection, but the side effects have been terrible. I️ genuinely feel sick. I️ couldn’t get out of bed yesterday and I️ felt feverish. When it got to nighttime, I️ was shaking uncontrollably, was insanely nauseous and had subtle diarrhea. I️ woke up 4 times last night and this morning my body is extremely weak and I️ feel fevery again.

Do you think it’s from my antibiotic or am I️ actually sick?

(I️ stopped taking antibiotic 2 days ago)

Also may I️ add I️ have very bad anxiety and I’m getting a procedure today that has caused me a lot of stress.