We are 21 years old, we had sex on 29th may, and at the 73rd hour my girlfriend consumed unwanted 72, her date is 11th but after taking it periods have not occurred (today is 9th june) and she is experiencing dry vomits, back pain, headache, and hardness in the breasts. So we are worried about the same as she took the unwanted 72 a hour late, at the 73rd hour the expected date is 11, we have 2 days but the dry vomits and the problems she is facing looking to it we are tensed. So please suggest what to do. And will the periods will start at 11 th as usual cycle, and what to do if they got missed?