ttc advice 💕

i’m 11 DPO and getting very clear negative tests. However, i’m experiencing some symptoms and am not sure if it’s pregnancy related or not? For the past few days I have been extremely nauseous, emotional, have been cramping, and have been peeing like every 5 minutes. I’ve been testing since 9 DPO and haven’t even had the slightest line on any test. I ovulated late in my cycle (CD18 was my LH surge) so i’m wondering if that could have something to do with it? Im

now at CD30. I also have been sick with sinus crud the past few days so could that could just be the cause of my symptoms… what do you all think?