My period is 5 days late and ..................read details.........?

My husband and I are trying to get pregnant.....we have had everyday since my last period ended Jan. 29 (I believe). Now my period is 5 days late. I took a pregnancy test 5 days before my period was due (the early pregnancy test) and it came back negative, the day after (4 days before my period was due) I took another one and it also showed negative. Could I be pregnant? Is it time to retest? Did this happen to you? I am normally very punctual with my period every 30 days. This is the second month we are trying......