Me and 3FRIENDS have ITCHY PRIVATES. we slept with SAME GUY?

I@m a 39yr old fmale. I recently hooked up with a bunch of old buddies. Anyhow, i have an embaressing issue. The pharmacy cannot help us. Basically one of the guys in this new group is promiscious. Me and two of my girlfriends were with him within the last 10 days ( unbeknownst to each other), and now ALL 3 of us have NASTY blisters on our pies. One of my friends is married so its awkward as her husbands now complaining of itch in his privates. The pharmacy said we need to visit a doctor, and refused to check out my pie area in the chemist. How is she supposed to know if she wouldnt take a look at the blisers