2WW 12 Dpo confusion

Rachel
Hello everyone! So i am at 12 Dpo today, i've been testing since 2 days and it is negative. I haven't had much symptoms other that very swollen boobs and fatigue since 5Dpo. I did feel painless cramps in my pelvic area through 5 to 9 Dpo, no spotting and no nausea or headache. I feel different than the other months and something tells me i might be pregnant but the lack of symptoms and negative tests is dissappointing and making me wonder. Can you share your experiences? Some people said they tested negative until 15 to 18 dpo. So i am just wondering..