Can you have your period the first month of pregnancy?

yes you can have a period the hole time your pregnant
An actual 'period', no. You can however have bleeding. With my 5th child, I was a couple of days late and took a hpt. I wiped and noticed bleeding and thought 'oh i finally started', glanced at the test and it was positive. I called the doctor and made an appointment because I assumed it was a miscarriage. I bled clots the entire weekend, and saw the doctor on Tuesday and he said I couldve had a miscarriage and since i was still bleeding they gave me an internal ultrasound to check to see if i needed a D&C. I didnt, there was my baby boy. I was given progesterone just in case it was a threatened miscarriage . He was born 2 weeks late and weighed 10 pounds 7 ounces. Hes now 12 yrs old. All pregnancies are different, and nothing is written in stone. Good luck.
No you can't because you had sexs

No you can't because you had sexs