lump in the vagina

So about a week ago I found a pea size lump inside my vagina, it's really far in about 2 inches. I when and saw the nurse yesterday and she wants me to go bk Monday to see the gynaecologist doctor she at first thought it could be a cyst. But because it's so far in it's unlikely to be a cyst. 
So now I'm really worried that it could be cancer, other symptoms are pain when having sex and bleeding between periods. And also just gone 73 days before I got a period. 
I've finally told my boyfriend too I will see the gynaecologist doctor then probably will be referred to the hospital. 
I'm looking for anyone with any advice/ experience as to what may happen next