I am a bicyclist. Had a lump on left ischium, thought bursitis, then realized it changed from one lump to three. Shotty nodes. We treated w keflex, maybe got smaller. Rode again and developed an inguinal node also. Pcp thinks muscle inflammation, chiropractor says not likely, gyn says leg shaving. C.T. Negative, ultrasound negative. Still there, month four. Any suggestions?