Vagina problem

Hi i just wonder if anyone has the same problem and is to embarrased to go and ask about it just inside of your vagina in the middle is there supposed to be a sqashy bit of lump like not to be too discusting but if you were to put your finger in can you tell me does it feel normal to you im just confused and worried if anyone can help id like to know is it supposed to be there. thank you.