I have always had normal periods, every 30 days like clockwork. I am now 12 days late and have taken 2 pregnancy test, both negative. My husband has had a bacteria infection and is scared he passed it to me and that is why I have not started my period, is this possible. I have no signs or symptoms of an infection or pregnancy, any ideas?

If your husband had a bacterial infection it is quite possible you do also. You need to seek medical attention so that you can have this diagnosed and treated properly.