Painful sex 15 years of marriage

Hi all,
I am new to this forum and not sure if this is the right place to create this topic. I have been having painful sex for the past 15 years of my marriage, this makes me not want to have sex more than like 1 time a month and that would make it even worse and more painful.
We use astroglide lube but that is not helping. I finally spoke to my friend and she said there are lubes with numbing agents that we can use so I don't feel this much pain. Would you please recommend something I can buy? Thank you so much

Have you seen a doctor? What do they say about this?