Am I big enough to please a girl??

My penis size is 4.5 inches fully erect and 5.0 girth and 3.5 inches flaccid. Can I still please a girl? I am supposedly getting married, so I m not very happy about my size down there. I always feel in worry that I can t please her down there. I get a little sad when I talk about my penis size.
Update: Ops! Sorry folks, lol. I measured my penis wrong. I didn't measure it from the base, so the total length was 5.5; not 4.5. My bad lol.
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