Hello, I´ve been reading about PE for a few weeks now and decided to join the forum. This is my story.

I am 18 years old and never really thought about my penis up until recently when I started seeing this really beautiful and hot girl. I was so confused in the beginning because in our first more sexual interactions i would barely get hard. We never went very far and i avoided her to touch my penis because i was embarrased that it was soft. We have good chemistry and everything but when we start to make out and clothes come off i get anxious and i´m kinda stuck in this bad circle. Anyways things got a little better and i began to loosen up and erections came more frequently, but as we got more close to intercourse i would always lose my erection and just roll over to the side. Anyways one time I just decided it was time for me to stick it in because i really wanted to lose my virginity (pressure from friends etc.) so i stuck it in when i had maybe 60-65% erection. We had very short sex and i pulled out because of not being hard enough. We´ve kept seeing each other but i still have this problem and we dont really go far, even though both of us really want to. She told me one of her exes was really big (she didn´t say it was a good thing) but it stuck in my head and now i am also a bit concerned about my size and i am intersted in starting PE.
I am 16,5-17 cm BPEL
13 cm EG
I am a grower and i am actually more interested in flaccid gains.

But i have a question, i am only 18 and i was late in puberty. I still grow in body height (or maybe i just stopped) and feel as my penis will grow a bit more naturally. My dad has got a very big penis which also makes me believe i have some more growth to expect. Should i begin with PE?

My main problem is my erections, and i would gladly recieve tips for how to cope with performance anxiety but i am also interested in PE and if anyone has experience in starting young. I will now read everything i come across in the forum but if anyone could give some advice i would appriciate it alot!
Thanks in advance