Hello,
From the conditions that you’ve described it does appear that you are suffering from social anxiety. Social anxiety can often get quite debilitating causing restrictions and limitations in everyday life. Severe anxiety often puts excess load on one’s attention, thereby seemingly causing memory problems. It is possible that you’re so overwhelmed by anxiety that you’re unable to pay full attention while studying or doing important work, and hence feeling forgetful. However social anxiety is treatable with psychotherapy and/or medication (esp if anxiety is too severe). You will be able to live your life to its full potential. Introverts aren’t necessarily anxious or shy. They tend to feel more fulfilled around people with whom they share interests. So even if you’re an introvert, that doesn’t imply in any way that you should be anxious or fearful.
Next Steps
Consult a clinical psychologist or therapist. You can look for therapists in your area in Delhi. Most are listed. You can also consult one online on portals like Practo and proceed accordingly. Persist with treatment once you start. You can share regarding your monetary limitations with them, and discuss your options.
Health Tips
Deep breathing, meditation, exercise etc helps in managing anxiety.