One side labia minora has hard pea sized lump with dark spot on it. Like an open sore. Now it hurts. Doesn't look like a cyst. Never had std. Thanks?

Bartholin's Cyst. What you are describing sounds like a infected Bartholin's cyst, although other things like herpes cannot completely be excluded without a physical exam. You should seek medical treatment at this time as you may need antibiotics or have it surgically removed.