I am so confused

I’ve taken what feels like a million tests and all are negative. I’m not sure if my symptoms are pregnancy related or period/ovulation. I have the some lower back pain/cramping and that’s really all. I’ve been lightheaded but I’m also 99.9% sure I’m coming down with the flu! I really do not want a baby right now. It’s not good timing for me. I am also so stressed, can I trust all of my negatives? I know I will see a doctor soon for bloodwork but I want to make sure it isn’t stress first. I’m extremely extremely late so I feel like if I was positive tests would be showing right now. Just anxious, young & need advice haha😂