A large lump ?? PLEASE HELP.

Kat • Im a gamer and a cat Mum to two beautiful cat. I have chosen the child free life with an amazing fiancée.

I have just found a large lump about a cm wide and about a cm and a half big in the space between my vagina and my ass hole. It's really very painful.

I first Noticed the lump on the night of the 3rd (yesterday). I don't no if this is connected but yesterday morning I was with my so and we had dry anal. Please help. I'm ever so worried