Vagina smell! help!

Laura
So throughout the day I feel like I'm basically peeing myself because how much discharge I'm having. 
I would literally touch my area through my shorts and I could feel how wet I am. 
Once that dries and I'm sitting there and I open my legs I can smell my vagina. 
I personally don't think it smells bad. But it's just really musky. It kinda smells like sex. 
What do I do? 
How can I control it ? 
Why do I have SO MUCH discharge?