Penis insecurities

Hey, I need some advice. I don’t if this is TMI but YOLO. I’ve been struggling a lot in the bedroom in terms of my confidence with my girlfriend. I don’t know if this is too much information, but here goes: my penis is average-sized, about 5 inches, and I guess it’s on the “thicker” side, as many people say. The issue is my confidence. Ever since my girl dropped the hint that her previous partners were packing white anacondas, I never felt the same. I try to hide it but can’t. I don’t know how to feel. She tells me I’m doing great and it’s the perfect size; it isn’t small. But the thought of her telling me she had much bigger partners before, and mentioning “two hands or more” in the past, literally broke me for weeks. I’m also black and not fitting into the stereotype of having a “BBC,” while her previous white boyfriends had “BWCs.” It eats away at me all the time. I honestly don’t know what to do. She’s told me I’m the perfect size, but I feel like it’s one of those “let me say it’s perfect but in reality it’s small” I have done good to hide my insecurities and pleasure her in other ways since I try to focus on her cumming first, but it’s only causing so much mental anguish I cannot bear it much longer.is there anything I should do to alleviate this :(

Edit: TLDR: 22M feeling insecure about penis size due to being black and having a small penis and GF F24 hinting she had bigger in the past.