Overthinking is exhausting sometimes. Specially if u are an anxious person to start with. If this is of recent onset due to corona then it’s normal and common. Everyone is anxious. But since it’s started affecting your sleep it may be problematic. Nevertheless it’s treatable. Please consult a psychiatrist for proper evaluation and treatment. In the meantime you can practice relaxation and breathing exercises to help reduce anxiety. Avoid caffeinated drinks as it can worsen anxiety and keep you awake. Practice sleep hygiene (u can google it).

Its oc symptoms. Need complete evaluation

You need to get evaluated in detail to rule out any psychopathology so that treatment may be started if required. We need to take into consideration to what extent your worries are affecting your sleep, which in turn is affecting your routine and general mood

Plz take a psychiatrist opinion for detailed evaluation and management