Hi, I Was In The Hospital Two Nights Ago While

Hi, I was in the hospital two nights ago while passing a kidney stone (first time ever), and I received dilaudid iv push two or possibly three times. I don't know the dosage. I have been home since midday yesterday. I have been feeling very tired since then and slightly confused and easily upset. I'm 83 years old, so such symptoms worry me a lot. Would this be a normal side effect? Thanks in advance ...