In fact, women don't care about your coarseness. In sexual life, it is good for men to have a normal size, that is to say, it is completely possible to be above 10 cm after erection. As for the thickness, women's feelings will not be different because of the thickness.
Think about it, a child that big can be born there, and your diameter is only 3 to 4 cm.
Many women say they are afraid of being thick.