So my first TB was in February, which was negative, then 2 weeks after it was also negative. A year before I remember having a slight reaction, and the doctor said i must have been around someone exposed to it. .... In order for us to register for our winter intersession we need an up to date tb, so I went today. Its red all around about the size of a quarter and slightly raised. I'm freaking out because we start our OB rotation in two days, and the program is only getting more intense. has anyone been or heard of a situation similar? I dont want to risk getting babies sick, and I dont want to miss my rotation and miss out on OB, which I feel I want to work in.