ETH transaction submitted but didnt confirm yet after 10 hours

I sent ETH from my metamask to my coinex 10 hours ago and its showing submitted and didnt confirm yet.
I used this metamask account for few months and i did several transactions until now, and this is first time that my transaction didnt confirm yet.
Actually i have another transaction in my history that showing only submitted and didnt confirm but that was successful transaction and ETH transferred in few minutes.

What should i do now?