Please help me.

Does anyone here struggle with getting the penis in? My boyfriend and I have been dating for almost a year and tried millions of times, but we just can’t do it. I had sex with my last boyfriend, but there is a significant size difference. It feels like he is hitting a wall. I am honestly so embarrassed, but he’s super supportive. I also bleed brown blood whenever he fingers me, tissue comes out, and if I don’t bleed during it I have light purple discharge later. Please help me, i’m desperate for someone to not just tell me to use lube and try different positions. I have tried everything. I was just diagnosed like a week ago so this is all new to me and i’m honestly terrified.