prenancy test

My period was due March 7/8th. A few days have past and the though rambled in my head "am I", I decided to wait a few more days due to high stress in my life I assume I may be late. I can't wait anymore- Its now March 14th I went to buy a test. Instantly the 2 lines appeared. I'm shocked. With only having sex 2x in feb. never did I think this was going to happen. I wanted to cry but I can't I'm numb. I go to my husband "do you want good news or bad news" he said "what" I tossed the test to him, he's seen them before so he knows without saying the results. He says to me " how did this happen" dah YOUR sperm honey.