Hold on to your butts

So my sciatica nerve on my left side has been very painful for the past week and a half. I've been taking Alleve and the occasional Hydrocodone left over from Shawn's surgery over the summer. We had 2 pills left when I went to work. I took 2 Alleve and called Shawn a few hours later, asking him to bring me the Hydrocodone. His mom offered me some of her left overs before so I asked him to take her up on her offer, thinking she'd give some more Hydro- or Oxycodone.

Nope.

She gives me Morphine.

I've never taken Morphine before and I have to say that I'm a little nervous. Has anybody had any experiences with it? Is it going to send me for a loop? I have tomorrow off.