bleeding over due

salaams after giving birth recently, i did not bleed continously for 40 days unlike my last 2 times. (i normally bleed heavily) i bled very litlle on & off. maybe a little every day or every 2 days. so i continued to be napak for 40 days as i understand one should act according to the way it usually would be. however, it went 3-5 days over my 40 days period. i performed gusl by the 40th night. however, in those extra days, i only spotted maybe once in a day. so, i never did fresh wudhu for every salaat as i only spotted once a day for those extra days. i only performed fresh wudhu if i obviously broke it or if i spotted which also breaks wudhu. does that mean my sallat was not counted? was i supposed to do fresh wudhu even though i only spotted once in a day? if so, does it mean i need to perform qaza salaat for it all? also, just now i carried out red discharged and later on followed by spotting. it was more then 15 days after my nifas period so i counted it as period. but it was only that day. 3 nights after that, i spotted again and the next day i had pinkish discharge. is this counted as a period? sorry, im just very confused. jazakallah hu khair