?????

I've got this feeling that I'm pregnant. I've been nauseated, vomiting, extra tired,sore boobs, headaches. I've been testing for about the last week bc I'm not sure exactly when I ovulated bc I haven't had a period yet since my son was born back in October. I feel like I see a line that's getting darker but I'm not sure if it's true. Surely these can't all be evap lines right??? Please help me out