Anxiety

I'm suffering from major anxiety right now. I feel like I'm reliving one of the worst moments I can remember in relationship history. It hasn't happened yet, but I'm fretting because my mind keep saying, "what if... what if..". My boyfriend went out to a "boys night" tonight. The reason that's in quotes is because they went to a club. All the men invited have girlfriends so to me it seems odd they chose a night club for a boys night.... to me this is simply a strip club to them where the girls aren't fully naked but still attractive but with the added benefit of being achievable and in some cases looking to hook up. My boyfriend once told me he was no longer interested in clubs because they aren't the same when you're not single. It's not like guys go there the same way girls do (to dress up and dance), they are usually going because they're on the hunt. He said he wouldn't be interested in chasing or even pretending to get numbers because that would be "playing with fire". Then today he all excited to go out tonight with the guys, getting all ready and beautified and saying stuff like, "I look good. Untouchable!" and wondering what shirt to wear. I said "who you trying to impress?" thinking, "obviously not me...." with some feeling of sadness... I remember a time in a previous relationship when I was not invited to a club with my ex because it was a boys night...only later to find out that that was just code for "no girl friends" night but all other ladies may apply. Needless to say that was another nail in the coffin... Tonight I sit here wondering if I'm in the right to be so freaked out by this or if my amygdala is simply over reacting to a perceived threat based on experience. Either way I feel my boyfriend is definitely being a hypocrite about it... Why does the girl friend always seem like the crazy person in these situations? This is extremely irritating and I don't know how to deal with me stomach getting all woozy and my brain over thinking and making up worst case scenarios. It's hard for me to believe a bunch of guys went to the club and didn't dance with random girls. I know if I acted that way he wouldn't be too pleased. I don't know if he's actually dancing with other girls but I really don't like the thought of it.