5 days late w/ a negative hpt

Morgan • I`m 23 and my boyfriend is 26. We both have children but we are TTC our first, we haven`t been trying long but I`m ready
Hey ladies I am not five days late on my period and just took a test that was negative. I feel pregnant I am light headed, nauseous, and very emotional, and have to pee a lot. Anyone have some advice or is it all just in my head because I want to be pregnant?