You've missed the point. This is about the Middle Ages alone, not ancient Egypt, which was a completely different timeframe, with a very different climate compared to Europe and also a completely different culture compared to christian medieval Europe many centuries even millennia later.
And no, there aren't plenty of MEDIEVAL sources, which tell us about the shaving habits of the common people. Most of them are even contradictionary.
That's why I said, there is no real conclusive answer, but only good or bad arguments for the one or the other. While you've made completely unscholarly general claims, like
Who, which social class, which timeframe and also in which region of Europe? It's not contested that some shaved their pubic hair, like the already mentioned prostitutes. But we cannot make such claims for the majority of medieval common people, not even for the nobility. Also if shaved pubic hair in the Middle Ages was associated mainly with prostitutes, a profession which was very much looked down upon by normal people (we're talking about whores, not concubines for the elite), would a normal woman want to be associated with prostitution by shaving her pubic hair? I highly doubt that!