Implantation bleeding or period

So my partner and I are trying for a baby for about 7 months now, I was due for my period on Saturday 24th of Aug but instead I had light pink bloody discharge Friday lunch time  (day before period),  though to Saturday then went to red couour . my periods last for 5 days, Monday my period stopped then was spotting Tuesday thought it was finished wednesday i had nothing , Today is Thursday 29th and I just started having really small spotting brown blood. Strange thing is that when I get my period it always has a type of smell but this time there was no scent nothing and I haven't had any cramps like I do a few days before period but having mild cramps today (29th Aug) I also don't have spotting after my periods ,some one please tell me what it could be , I'm so confused