Hi doctors. If my girlfriend had sex with me on 23rd August. Then took a I pill next day. Then again had sex on the 27th without ejaculation inside the vagina both times. After got withdrawal bleeding on the 29th that stopped after 2 days. Then on the 8th of September got early periods that lasts for 4 days. Then again on the 8th of October had her periods for 6 days. When can I expect her periods next month if her normal mens date has been 16th of every month. And today I just rubbed my penis on the outside parts of the vagina and did not ejaculate anywhere near her vagina, just once I tried to penetrate but I only went in about 1 cm and did not ejaculate. Is there any chance of pregnancy?