Credit: Instagram Photo: Justin Bieber in hospital

Justin Bieber had trouble breathing at one of his London concerts yesterday, and was taken to the hospital.

It sounds like he’s still not sure what the problem was, since
he tweeted to fans Thursday night, "getting better. thanks for everyone pulling me thru tonight. best fans in the world. figuring out what happened. thanks for the love."

He also shared this photo on Instagram, writing, "Gettin better listening to Janice Joplin." It’s a little too Playgirl: Hospital Edition, but at least he seems in good spirits.

Sources: @JustinBieber, Instagram