Do I have a small penis?

Hello. Not long ago I got my first girlfriend and soon we started having sex. I lost my virginity with her. She had already been with several people. It gave me a lot of pain, because I always thought I had a penis, although not small, not too big; that's it, too thin. She doesn't say anything, but I've noticed certain things. In some way, I know she measured and compared my dick to those of her exes. She told me once we have a moon in the same place and, on one occasion, while sucking me, said yes, when you're erect it gets bigger, saying it more or less like that, which is for me. I've also noticed she doesn't make comments about big penises. On one occasion she made one and then looked at me and said sorry. Personally, in many occasions I don't feel her. When she penetrated me, she moans but I generally don't feel anything at all. So it's impossible for me to ejaculate. I'm attaching photos so my friend can see them and give me their opinion.