I don't know

So on January 27th I started spotting off and on and thats when I started taking the pill up until the 29th when I believe I started my period, and I just stopped taking it (don't know why)

From the 29th to the 7th or 8th I believe is when I was bleeding like a regular period. today I am still spotting. And just to let you know I just had a baby in November, and it was a c section . Does anyone know why or what it could be????