Idk????

Caitlin • Married three years two baby girls 💗
So I've been super busy-not obsessing over crap. And been TTC #2 for nine months, well my AF is almost 5 weeks late. This has NEVER happened to me except the one time I was prego. I got a blood test two weeks ago and it was negative all other blood work was normal. What could be going on? Like I said not stressed not obsessing. So what else??