Lump on the floor of mouth???

Hey guys. I’m 32w and 6d and I discovered this large lump on the floor of the inside of my mouth. It wasn’t there prior to pregnancy or even prior to 30w pregnant. It does not hurt but it is kind of big in size. I’m scared this some kind of tumor or something. What should I do? Do I talk to a dentist or my OBGYN??? Thanks for your help