help ?

I'm 17 years old, I've been having a few concerns lately.
1. little awkward but for the last like 2 days, I've been really gassy and they come out stinky ..
2. I've seen posts that say that it's normal to discharge but lately my discharge has been having a bad smell .. 
3. I've been getting these little patches of like dry skin on my body .. ( excuse the stretch marks )