Please help!

Hey ladies! I need your help😩 I have been TTC for a year and a half now, and haven't had any luck. March through July of this year I have been taking Clomid (100mg). As of 8/10, I'm 13 days late. I took a test 8/13 and it was negative☹️ since then I've just been getting more like-pregnancy symptoms - wheezing cough, runny nose, sore sensitive breasts, dull aches, headaches & etc - but today when I got home from work, I started spotting lightly. It's brown spotting. What does this mean? Is it just my period, another sign of pregnancy or should I be worried?