Hi Valentina!
I understand how you feel when being left alone and awaiting friends' responses, sometimes it does become quite a challenge. I found this on a tumblr post a while back which definitely helps me out whenever I have a panic attack or my anxiety gets to me, so hopefully it'll be able to help you too!
Firstly, wherever you are, look around. Find 5 things you can see, 4 things you can touch, 3 things you can hear, 2 things you can smell and 1 thing you can taste. This is called grounding, as if to bring your feet back to the ground whenever you have lost sense of your surroundings.
And when you feel lonely simply distract yourself, like how the other replies mentioned listening to music, reading a book or watching TV. I find binge watching a fantastic show incredibly useful to keep your mind off of things like stress and anxiety, which can also fill the lonely void you may be feeling. But only keep binge watching to these types of situations, overdoing it can lead to handing up an assignment late, forgetting someone's birthday, maybe even your own name etc. 🙂
Maybe eventually when one of your friends respond they could help you be distracted which definitely helps in the process of calming down. I hope all goes well!
