I'm 36 years old and I have 2 kids and the youngest is 3 yrs old . Its been a while that I've been pregnant but I know what to expect but I don't understand why my pregnancy test keeps coming out negative. I have all of the symptoms and if i;m not pregnant then what else could this be? I've been nausea, boobs hurting, missed period, headache, sinus infection(I had with my other two kids), bloating, mood swings, clear discharge that looks like snot, fatigue, cramping, lower back pain,and food cravings . I took a pregnancy test on April 18th and today and they both came out negative. Please help me has this ever happened to anyone else? If so what did you do?