I feel something poking me on the inside of my gum after 2 weeks of getting a tooth extraction. could this be bone forming there?

Could be: But most likely it is the edge of the socket where the tooth was extracted. Let your dentist take a look and you will know for sure.

Healing socket: Where was the tooth extracted? Was it a wisdom tooth? Did the surgeon add bone to the area covered with a membrane? These are all variables. Most likely what you feel is a bone spicule if nothing was done. Go back to the dentist, it can be watched or smoothed down, it appears to be a healing socket.

Bone fragment: It is very common and unfortunately they can be painful. If concerned see your dentist for post-op evaluation.