COULD THIS GIRL I SLEPT WIT BE PREGNANT PLZ HELP ME KIND OF SCARED?

so me and this girl had like two months ago so it was in june. Yesterday she was telling me how she was felling sick all day like she was going to throw up and she was having really bad cramps. I was like maybe your pergo and she was like maybe. I was like wit me and she was like we did not use a condom. She has two periods but she said wit her first kid she still had two periods and was prego. Then today she is saying her are sore and sensentive and she fells sick. So my question is coudl this kid really be mine.