What Can Be The Cause For Itching All Over The Body?

Hi,i am 30 yrs old women and i am having one month baby.recently i had Cesarian.On Friday i had a mantox tb skin test.On the day itself it started itching and suddenly i scratched. Now it was inflammation and till now the itching wasn't stopped. Other test are negative only.so i want to know that,is am i affected TB or not?will u please gimme the answer. I did this test for my immigration process.