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1.Multiple lumps along the breast in a 21 years female can be inflammatory cause along with the
lymph nodal enlargement in the armpit / axillary region.
2.The lumpiness could be glandular pattern what you feel.
3.But inguinal / vaginal area lumps are also possibly lymph nodal enlargement.
4.Only suspicion is of
weight loss, in this case the possible cause could be systemic disease causing all the above symptoms.
5.Suggest to get an
ultrasound breast to assess the lumps if they are there - the nature of lumps, its source and extensions. An FNAC - of nodes to evaluate the nature of cells involving.
6.An abdomen pelvis ultrasound to evaluate any internal organs causing the above symptoms.
7.Please
seek medical help and evaluate as soon as possible. Good luck.
Hope i have answered your query.
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http://doctor.healthcaremagic.com/doctors/dr-ganesh/62888 Thank you.