what could this be??

My bf and I had sex a few hours ago and I was laying in bed and felt something inside my vagina. I stuck my fingers inside and noticed this?? I am pregnant and see my Dr on Thursday (5-10-2018) curious if this is just a cyst or maybe more???? anyone???

It is not painful for all of you asking...

my Dr called in sick Thursday so I won't see her till wed. It has gone away tho but I still plan on asking her just to be on the safe side.

UPDATE:: it's gone away I did show my ob the pic and she said if it's gone not to worry to much about the cyst. if it does come back tho that she will take care of it after I have baby. Thank you ladies for helping and caring so much.