early symptoms. back pain and period pains?? please comment!

Shannon

So we've been TTC for more than a year now. I usually have a little bit if cramping before af but not like this. It feels like Im already on my period the pains are so heavy. I dont usually get them until late in the evening though not throughout the day? I know it's too soon but Im 7dpo today according to this and another app.. I took a test and got a bfn. I've been having cramps simce about 4dpo. Im bloated. cramps. back pain. sinus headache. Idk. i know I'm probably just getting my hopes up but I need to know if anyones had these symptoms and gotten pregnant! af due 24th..