TMI: Strong urine smell AF due 8/2

Ok so my AF is due 8/2 according to Glow, and my DH and I have done the baby dance quite a bit, including time during the FW. This evening while at work( night shifters unite!!) I noticed my urine smelling.... Stronger. No unusual d/c, burning, pain, or other UTI S/s. I did look up to see if this is a possible sign of pregnancy, and some site said yes to those who have had previous pregnancies. I took a UPT at home before my shift and it was BFN. Has this happened to anyone, or is it a sign?  Tnx.