Spotify not showing connected bluetooth headset

[7me6u_44-smm6]

Hello! I was hoping to find some help with my spotify. When i have my bluetooth headset connected and playing music on them, i still can't see the bluetooth device in the menu below the pause button. So when i get in my car for example and listen to music on my FM transmitter, then i turn on my bluetooth headset for calls, it switches to headset automatically and i cant switch back. None of my bluetooth devices are shown. 

I have samsung galaxy s9+