I'm in my mid 30's and have been having orgasms since I was a teenager. During my 20's I had very low libido but have found that things are changing now! But I've been feeling orgasms differently now than I used to. Not all the time, but often, I will feel them in my bottom. Instead of feeling the contractions in my vagina, I feel it in my anus. I do like it and find it interesting, but I haven't been able to find any information on why this is suddenly happening. Until I felt it, I had no idea you could feel an orgasm there. Is this common? Thanks for your advice!
I don't have an answer for you about how common it is to experience orgasms anally. Have you recently initiated anal eroticism in your sex life? I do know that when I did double penetration the sensations I had anally completely over powered anything from my vagina. Seems the anal canal is a misunderstood organ when it comes to sexual sensations. Perhaps it's because there are far more nerve endings than in the vagina. Of course both vaginal and anal penetration is always combined with clitoral stimulation from my vibrator, so the clit is Queen of sensations. As we continue along our individual orgasmic paths, only one thing will remain consistent: Our orgasms will expand and contract and be different and unique throughout our lifetimes. It's fun to speculate why, where and how, but mainly the idea is to just enjoy the trip. Let me know what you personally uncover as you continue to explore your erotic self.