Hello,
From the symptoms it looks like boils. The other possibilities are swollen lymph nodes or hidradenitis suppurativa. Please keep the area clean and apply some warm compresses and topical antiseptics. Also wear loose-fitting cotton clothing and use an antibacterial soap or mild soap like dove. Topical antibiotics such as mupirocin or neomycin containing ointment are also useful.
If still the lumps persist then specific treatment like antibiotics, vit A supplements, corticosteroid injections, isotretinoin, antiandrogens and sometimes excision and drainage ,laser therapy and radiotherapy are found useful. I feel that you should consult a dermatologist and discuss these options with him.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.