Trying to conceive

Taylor

Hello ladies.. my boyfriend and I are trying to conceive. We haven't been using any kind of protection or anything. I've always wanted to have my own kids, and my boyfriend already has 2 of his own. But my last period was July 22nd through 27th and had a regular period, and then here I am 2 weeks later and I am having lower back pain, nausea, and headaches. Took 2 pregnancy tests today and they were negative. Could I be pregnant but it's still too early? Am I overthinking? Need advice on what to do/think.