Hi Mansi, since your NTA JEE Mains score is 72 with EWS categiry than as you have also mentioned the cutoff of your category i.e. 70 so whatis the confusion you should be confident of clearing the JEE Mains with EWS category so you are eligible for JEE Advance exam.
Good Luck.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile