I agree with mimi Eddie. I've had to go to the Derm five times now and the first two times it was for a single wart similar to what you described more or less but about half the size. The last three times they have been been super tiny clusters of three or four and a different color. This just goes to show that they can be different. Not to worry though, just go in and have them dealt with. The derm will have an opinion about it anyway just from sight. Also, going in a second time is pretty standard so just take it in stride, be cool, and make right decisions for a while ready to rejoice when three, then six, months rolls around. You are gonna be stoked. Then, never **** up again! Lol. But seriously, lesson learned for all of us. Cheers.
Since you have had warts, I say its safe to just got back to the dermatologist to make sure.