i had a crack that came from irritation (so the doc's said) so i dont think u have much to worry about.
Most groin boils go away on their own. If yours are hanging around, you may want to talk to a doctor about taking an oral antibiotic. (Something in the penicillin family works best.)
Meantime, you can wash the area with Hibiclens (antiseptic, non-Rx), and apply bacitracin or neosporin ointment twice daily. Also don't squezze the boils.
Once there's no further drainiage. the redness will go away on its own, though it may take weeks.
Best.
Dr. Rockoff