Implantation bleeding?!

Hi everyone, just wondered if anyone could explain who has had it what does implantation bleeding look like i.e. Spotting? Like a light period? Pink/brown blood? And did you get it once or does it last overnight? A couple of days? And when did you have it, straight after like the day after conception, early or late during tww, when you were suppose to come on? I dont know this information and feel like it would benefit me to know. If anyone can give me this info/experiences. Thank you in advance!!😊