Period confused!!!

According to eve im 1 day late. My periods have always been on time or a day early but never late. Took a test yesterday and it was a BFN. If i am pregnant id only be a couple weeks tops. Could it be too soon to tell then?

When should i test again?

My last pregnancy (eneded in miscarriage in April.) i had a period when i found out i was pregnant. Any advice???