Suggest Treatment For Pilonidal Sinus

i have a pilonidal sinus for the 6th time now. I had surgery the first time but since then I have just taken antibiotics. This time I have had bad pain for a week and can no longer walk at a steady pace and cannot sit down. Does not help that I spend a full 12 hour night shift sat down 5 days a week. I simply cannot take any time from work. Is there anything you can recommend. I have considered draining it myself since I cannot get into my GP's surgery.