sex and vagina

hello ladies?

i have some questions i need help answering but i am to ashamed to talk about so here i am trying to finally get some answers!

i am 27 with two beautiful kids my youngest is 6 and i can't lose weight it is very hard.

my so it's not attracted to me anymore and i also feel very loose. when i sneeze i pee all over myself like i have to control over those muscles. i don't get off when we do have sex.. Ever.

so my question is how can i fix my vagina?