4 day spotting on and off period?!?😕😐😕

Af usually lasts 3-4 days for me ,

As it did .. at first it was bright red enough blood to fill a tampon, when i took my tampon out to pee.. i had a few blood clots. After that, for the next two days It wasn't heavy at all I bleed on & off , only needed panty liners. Then last night I only was spotting on & off again but only this time it was a tan to darkbrown blood. What do you guys think please give me some input I'm current ttc going on month 8, since my mc/dc in sept of 2015. I hope this is our month , I have hope ♡♡♡