Osbourne, 25, is the son of "The Talk" co-host Sharon Osbourne and rocker Ozzy Osbourne.
"This is what you look like when you have has your appendix removed," Jack Osbourne tweeted Sunday, alongside a photo of him and his pregnant fiancee Lisa Stelly.
"Man, high powered pain killers + radiohead = dangerous territory for me. I gotta get outta this hospital. This is getting to[o] good," he said in an update Monday.
Jack Osbourne battled addictions to drugs and alcohol when he was a teen, but has since said he kicked the habits.
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