I need your input ladies. period was due the 2nd. it didn't come I think I am irregular. this Friday…

I need your input ladies. period was due the 2nd. it didn't come I think I am irregular. this Friday the 11th I am going to my house to see my husband for the weekend I will leave Tuesday morning, it says that's when I would be fertile but I never got my period. can I still conceive during that weekend?