Regarding pregnancy

Patient: Hi doctor,i got recently married and had sexual contact with her. But we dont need child at this point of time, so iam using condoms. My wife got periods (mensturation) last month and after that we both dont had any sexual contacts or anything. But the problm is she dont got mensus till now. SO whether she is pregnant now.??last month feb 10th she had mensus and after that not yet attended mensturation of this month