Im late

I just have to tell someone, I am two days late, with no signs or symptoms of AF showing its ugly face. I have never been late in the 15 years of having a period. Except for when i was pregnant. My 2 rainbow babies are in heaven. Had my first 9 years ago still born @28 weeks. I also had a miscarriage @ 10 weeks along in 04\13, I'm trying not to be excited yet because it is not that late. So I have a question, how long should i wait before taking a pg test? Also please send prayers and baby dust our way. My husband and I have been married for 2 years together for 11.