Painful sex.. need advice/tips/etc

I’m a 24 year old mother of two. I had my first at 17, second at 21. Sexual intercourse is very painful for me. I don’t remember it being painful before I had my first daughter, if that makes any sense. But I do know that after I had my first daughter, sex is awful. I had the mirena and I thought that might be why it’s painful like hello? It’s a foreign object in your uterus while you’re getting penetrated like crazy. I had it removed (to get pregnant with my second) and it was still painful. I don’t believe the mirena has anything to do with it. I know my uterus is retroverted and I believe my cervix might be prolapsed, not enough to where it’s out of my vagina but there’s probably an inch or two distance from the opening to my cervix. I’ve spoken to many doctors about this and they never give me an answer. Most positions are painfully awful. I try to be on top and even then, it hurts. I hate it so much because when I try to have intercourse with my boyfriend, he wants to try different positions but once he starts, it’s instantly painful and we have to switch to something that might be a little more comfortable or I just have to bite the bullet and take it. I’m getting frustrated and I don’t want my partner to get frustrated as well.. Has anybody ever hear about this or had this issue before? I’ve tried basically everything under the sun. From exercising to lubes, different positions, angles, medications, everything. I thought it might be vaginimus but I don’t believe it is. I know nobody here is a doctor so I’m not expecting a cure, just seeking any form of help/tips/advice from amazing women!