Help please! What is this?

Brynn

I know I keep positing this kind of stuff.. but it has me stressing hard core to the point that I feel sick. I’m still in Germany so I don’t have anyone else to get help from or talk to. So I had my period this month then I literally got it again the next week, and it lasted forever. Now it’s been brown discharge like this, and it smells sour. Just not good. I had protected sex about 3 weeks ago.. so I don’t know if I’m pregnant? Please is anyone going through this? I need some big sister advice and help 😣😣😩