Is he overreacting?

Rachel • 24, Hull UK 🇬🇧 Expecting baby number 1, 👶👑 my little princess due 29th February
I was showing my SO a picture of my cousin that I had put on Instagram earlier today, as he was having a guess at who it was he started scrolling through my page, not listening to a word I was saying. He came across a picture I had posted over a year ago, of my legs in the bath, basically from a couple of inches above my knee down to my feet and some bubbles. He's kicked off! Shouted "why the f*** is that on there" I said he was being pathetic but took the picture down, he said "are you gonna take it off or don't you give a f***?" And stormed off upstairs. He's making out like I've posted naked pictures off myself online. 
Is he over reacting or is he right to be pissed that I would have a picture like that on Instagram? 
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