I woke up this morning and went to the loo, as i was wiping i felt a lump and it was quite sore. It's about an inch away from my vaginal opening. At first i thought it was a normal inflamed zit of some sort but when i checked thoroughly i noticed it wasn't like a zit because it didn't have a head, also it was under the skin and about the size of a marble. It feels like a regular spot (sore and pressurised) but i'm worried it could be something else due to the size. Someone please help.