We had intercourse but before that I masturbated 30 minutes before but after intercourse she suffer pain. Her last period was on 3 may but we intercourse on 27th after 2 days she felt headache and later in that day evening she saw dark Reddish blooding little bit stomach pain which she faces every time before periods according to her. Her periods is regular and at the time of intercourse I didn't ejaculate in her only tip was inserted in her. Is it a sigh of her coming period or she is pregnant? Today she changed her pad two times since morning.