Vag Issues

About a year ago, I got on birth control (the implant in the arm) and I started noticing that every time I would have sex my vagina would seem drier than I was before I got on the birth control. So I always have to use saliva. Any advice on this issue and I also wanted to know if anybody else has experience this. Also, I’m receiving discharge everyday and it’s the color of blood. Does anybody know how I could stop it? I’m getting tired of putting on pads or tampons everyday.