TTC for 5 years

I'm 27 and my husband and myself have been trying to start a family for quite some time now. My world got turned upside down when my brother passed away unexpectedly on 5/1/17 and then my uncle passed from cancer on 5/20/17. I'm 12 days late and there are no signs of my period. Weird cravings for things I don't like and completely repulsed by things I enjoy eating. I've taken 2 pregnancy test and both came out invalid. Can someone please give me some advice? It is greatly appreciated. Thanks in advance.