Hi...
To start with I don’t think this has got anything to do with your vaccine so don’t worry about that.
Sometimes it could be because of dietary changes, nutritional deficiencies or if you have eaten anything hot and spicy.
But since this is happening again and again and has been there since months then you should consult a dentist in person because a physical examination in this case is important.
If the dentist finds any anomaly/lesion they might suggest you to go for a biopsy and then only we could reach onto a proper diagnosis.
Next Steps
Consult a dentist online/offline soon
Answered2021-08-25 05:17:16
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