Although by the looks of it your problem does not look serious, you should get yourself examined by a doctor. They will carry out what is typically known as a triple assessment (mandatory in all cases of breast complaints). This includes a thorough clinical examination, an imaging test (mammogram/ ultrasound
- to pick up small lesions which might not be palpable) and if they find any suspicious lesion, then they will do an FNAC (fine needle aspiration cytology - draw some cells from the lesion and examine them).
The first step would still be to get yourself examined by a doctor.