3 months pregnant,yet menstruating and testing -ve to urine pregnancy test.

hi ie 3month pregnant and have negative pee test my friend took like 3 or 4 home pee test and they the first 2 cam out negative and the last one said positive she went to the doctor found out she was 11 weeks pregnant so when she had took those first 2 test they should of came out positive not negative so to answer your question yes you can be 3 months pregnant and have negative test just look at the show i didnt know i was pregnant pretty much all them give birth without knowing cuase the test came back negative and got what they thought was a period so my advice is to go for a blood test or an ultrasound. a ultrasound would probley be the best because sometimes blood test can be wrong barley ever but sometimes they can be so take a test agaain if it comes out negative get blood work done or ask for an ultrasound to be done good luck hope i helped answer your question