Hello dear,
The problems mentioned by you here are suggestive of anxiety and apprehensions about your current state. However the degree of your worry is significant and it does seem to be affecting your current mental state and mental health leading to quite significant distress, despair, and impairment of functioning. Hence it would be worthy for you to get a mental health assessment to see if everything is going well. The symptoms described by you here may be time limeited, or may be a significant disorder or the mind. Hence a initial consultation for detailed assessment is likely to help you..
Hope this helps you. Best wishes for your health and future..
Next Steps
In the meantime you can follow these steps- please follow a regular sleeping and waking time, do some light physical exercise like jogging,/walking, or yoga, engage in some pursuit of your choice, talk to people who care about you like your friends or family, do not use alcohol or any drug as self medication, think about the situation calmly and may be writing notes to self would help you..
best wishes once again..