Girls, can you tell me if this is our tooth coming out? There aren't a…

Girls, can you tell me if this is our tooth coming out? There aren't any others yet, so I can't understand. The temperature has been fluctuating between 37-37.5 for three days, vomiting on the first day and in the morning the next day, and today I saw this in the morning. Our local doctor prescribed medication for an infection on the first day, I'll go see another doctor in an hour ?