Penis size

I can’t believe I’m asking this question at almost 25 years old but I’ve always been to embarrassed to ask my husband about it. When my husbands penis is soft, it is really tiny, almost like it is sucked back into his body leaving it a little bigger than a gumball. Is this normal?? When he’s hard it’s a good 6-7 inches. Now that we want to have a baby I’m just wondering if this is the norm.