This is so bizarre. Never cried like this

Betty
So, I posted here a week ago about 2 bfp's and I asked for your opinions. It was positive and I was so excited. I took more tests and they were all positive. Now today I woke up at dawn with light cramps and I test and got bfn. What's going on? I missed my period for a week and had 4 bfp's. I am broken hearted. Was hoping this will be my rainbow