8 days late

Today I am 8 days late. I have taken 4 test and all are BFN’s :/ I’m having cramping in my stomach and back, headaches, gassy, tired, mood swings, sore boobs, dizziness, and today while eating something I always eat from work I had to run to the toilet mid chewing and start gagging and dry heaving over the toilet.. has anyone gotten a BFP after negatives this late? Just really confused and need answers 😞