I've always been with anxiety, depression and OCD. Everything got better when I've started my masters in January. I didn't have a panic attack or felt shortness in breath anytime from Jan.  Less depressed. 

But all of a sudden since I woke up this morning, I'm feeling anxious and experiencing shortness of breath. I don't know what to do. I'm scared of it. Anxiety has already ruined enough of my life. I don't want it ruin me anymore. I'm on medication already. I don't know what to do. Nothing's working. I'm scared. Really scared.