Pubic hair is very thick. Little red dots are caused by razor burn, or in grown hairs. The only way to get rid of them is to let them heal, without shaving anymore. In grown pubic hair and razor burn is a common problem for both men and women who shave their pubes. And it poses quite a problem because the skin is veery sensitive, and in a private place so you dont want to be itching it all day. My advice to you it to let it all grow back, and then just maintain it by using scissors or electric clippers. This will keep the hair fairly short, and you wont get any shaving problems. You can keep it quite short and neat this way. Many women also prefer it to shaved guys as well.

Thanks a bunch!

Also to prevent itching try talcum powder.