am I out of luck this month?

Laura • Been ttc #1 for 13 months ✨💙🎀👶🏼
Okay so, my period is due tomorrow (10/23 or 10/24) and I was spotting on the 20th and the 21st of this Month. It was light pink and brown. Only when I wiped. Well I just went to the bathroom and notice some brown discharge in my undies. When I wiped it was red but light. Usually my periods are heavy from the day I start until it's over. I've had some light cramps but that's it nothing like period cramps. When I have my period my cramps are horrible. I took a pregnancy test last night and it was negative. Has this happened to anyone else and still been pregnant ?? Do y'all think I'm out this month? 😭😭