Dear doctor I am 24 year old. I got my last period on 22nd June that ended on 27th June. I had sex on 13th July. I enquired with my partner and he said he ejaculated and threw it inside the toilet. But I am feeling scared since I vomited today. I performed a sugar test at home yesterday and today early morning and both showed negative only. Is there any chance for me to get pregnant? Was that my safe date? I think my cycle is 28 days because on May I got my periods on 28th that lasted till 2nd June and after that I got my next period on 22nd June that lasted till 27th June and my this month expected period was on 20th July. Please respond doctor please.