Hi. Im 17 years old and have a series of small 4 underground whiteheads which cannot be seen unless being applied pressure to the crease of my chin . Within the last 3 days a large underround series of pimples which seems to have become one large swollen, soft pus sac under my skin with no head. In fear of causing more pain than needed and infection how should I go about removing this or even letting it go away freely?