Confused.

Megan
My husband and I have been ttc for about 3 months now. Ever since we first started trying, my periods have been really abnormal. Light, and only lasting a day or two. I have taken 3 pregnancy tests - all negative. I have also been feeling so many symptoms, such as fatigue, headaches, naseua, sore breasts. What the heck is going on?! Anyone else experience this?