My last menstraution was January 28 till 31. 2014,and feb,no more menstruation happened to me until today march 11,2014.

You can't "Consider" it that until you've been tested for it and get a positive test because there are a number of reasons a period can stop or be skipped without being pregnant. Though being pregnant IS one possibility. Tests are cheap..take one and find out.

There are dozens of reasons women miss periods, pregnancy is just one of them.

You test for pregnancy using first urine of the morning, and if not, consider a medical check up