I was in the hospital for a couple of weeks, so my bf and I were pretty eager to get busy again after my release. What are the chances I might be pregnant if:

-If was either during or just a day or two after ovulation started when sexual activity first resumed

-No protection whatsoever was used

-ejaculation occurred inside the female

- sex happened multiple times each day for about a week following the first encounter

-the female is eighteen years old and is only an occasional smoker

I realize I shouldn't worry about this stuff unless I miss a period, but I mentioned it to a friend and they are rather worried for me, saying there is a higher risk I might be pregnant. Is this true? Should I be a little concerned?