Loose Vagina

I have felt self conscious about my vagina feeling loose for a few months and my husband has tried to reassure me that I feel the same, until yesterday. It had been awhile and I got an orgasm really fast. Well I got really wet and really loose. He said I was too wet to be able to finish him off so I had to finish him with my hand. I was mortified and my worries come true. We've never had this issue before. What is going on with me down there? What can I do to help tighten me up?