Hello Friend, Good that you are seeking a help here. Any relationship break up will take time to accept the failure and adjust with reality. You may going through the transition phase of accepting the failure and it's quite possible to have such feelings. More and more you try to forget about that individual, you will be keep adding more memories. So don't try to forget, instead start to accept the failure  as it is. I know it's easier said than done. In such suitations try and take professional counselling help to handle and overcome such emotional disturbance. Move head in life by diverting your mind on other priorities and other good relationships. Call me directly or online through Practo app for further assistance.

Consult a psychologist to discuss and to understand the reason behind your Anxiety..

Feeling low, having crying spells, sleep and appetite disturbances, and difficulty in concentration and attention are some of the signs of Depression. Consult a Psychiatrist for a detailed assessment. It is likely with medication and counselings the symptoms will improve. If you are feeling suicidal or hopeless consult a Psychiatrist immediately.