Is it still possible?

Emily
I had a negative pregnancy test two days ago. My period starts in two days. I'm noticing I've been going wee more often now, and when I go, i have a cramp on the left side of my lower stomach. It can't be a cyst because I was recently checked for one and I've had them before. Also, I'm still extremely tired, my nipples are getting darker and they're sensitive. I've been having vivid dreams at night, and so emotional I've been crying at every little thing. But my test was negative. I shouldn't be getting my hopes up :(