Pregnancy?

My husband and I haven’t been trying but we wouldn’t be opposed to having a child. It would be a blessing!! However according to the app I am 20 days late. I have taken 7 pregnancy tests and all negative. Some I swore were faint and then I took some and the padding was dry when I took it a part so I feel as if I took them wrong. I tried the dipping in a cup, and peeing on the stick itself. Either way it’s been 5 days since I tested last and it was negative but it was probably taken wrong because it was dry inside the test stick. Someone help me with some tips or what to do. I also had a pink streak today when I wiped after peeing. It hasn’t happened until today but I have had other pregnancy symptoms including sore breasts and nausea. Should I test tomorrow if I possibly implanted today??