It is possible to have your period and to be pregnant!My sister was 4 months pregnant and still had her period.The only other symptom she had was extreme tiredness.Her doc said just for the heck of it,let's do a preg test-it came back positive!!My niece is 10 yrs old and just fine!!Hope your friend gets the answer she wants!!
Patty

Thanks for your help.

My friend's test came back negative but I don't know how accurate it was they made her drink 3 glasses of water first to make her pee. The doctor also said that no cramps and light periods were normal. I suggested that she might want to see a different doctor for her questions because she knows her body and that isn't normal.