Am i pregnant? the first day of my last mestruation was january 18. my partner cum inside january 26-31.

Maybe: If you have a 28 day cycle, then you just had sex during your fertile phase. At your age, you have about a 25% chance of conceiving. If you were trying to avoid pregnancy, it's not too late to take a morning after pill: the pill may delay ovulation and decrease your chances of conceiving. Look for "plan b" or "ella". If you are trying to conceive, unfortunately you won't know for about two weeks.

Impossible to tell.: There's is no way to tell if you're pregnant with the information you have provided. If you think you might be pregnant, then i recommend getting a urine pregnancy test done to make sure. They're inexpensive and are highly sensitive.

Fertility: Yes, of course you might be pregnant. You had sexual intercourse with exposure to fresh semen on your most fertile days during your ovulation. This cannot be a surprise to you. If your next period does not start on time then it will be time to do a pregnancy test. If you test before then a negative result may be invalid.

?: Chances depend on where you are in your cycle. Not knowing the length is important. Could always do a pregnancy test if yo miss period.