Thank you all so much for the replies, I can see that I'm in good company 😃
Since everyone was so open, I'll share a little more of my own experiences. As I stated earlier I started enemas at 14 with the aid of my grandma, I came to really enjoy enemas and would often finger myself to orgasm after taking one.
On my 16th birthday after dinner one evening, grandma and I had a glass of wine and a talk... she said in a very matter-of-fact fashion the I would most likely start having sex soon and that was ok. She advised that I insist on the man always using a 'rubber'. Then she went on to say I should take an older lover for my first experiences and to always be clean "back there" as men are very passionate about taking a woman that way. She said to refrain from boys my own age as I would end up pregnant.
So, my first lover was my tennis instructor (25), we were an item for about 3 years before drifting apart. I'd guess that about 60% of the sex was anal, for regular sex he always wore a condom.
About my grandma, one of my uncles once commented to me privately that grandma, back the day, was a lady of the evening. She came to the US as a war bride. She never hesitated to discuss anything sexual with me in those teen years. She even encouraged taking a lady lover on occasion.
Again, thanks for all the comments.