"You're too young to know" "Don't make something you'll regret/be disgusted in the future" "You'll mind will change when you're 30"

Hi, im a 18 yo guy in a rather conservative country. I've recently come out to my mom as gay, after only coming out to 2 of my closest friends, and well.. pretty much everything went wrong.Her first reaction was pretty much trashing the house a little bit and leaving home. After that initial ""shock"" got out of the way she was rather understanding and read and watched all the informative stuff i gave her. But still she can not come to terms with it and talks about it like its some despicable disease i need to get better.Her main arguments are what i wrote in the title.Dont make decisions you'll regret.You will scoff at these thoughts once you are 30.Dont speak about this to your friends because then no woman will be interested in you. (as if lol)How does even ""it"" work. (Where then she'll try to discuss the specifics of gay sex with me and point it out as "evidence", when im too disgusted to discuss how sex works with my mother.)People will make fun of you/me/our family/our ancestry.I dont have any idea how to maneuver around these arguments, and mostly written all this to rant. Thank you for reading.