Implantation spotting or discharge..?

So my period is expected to come the 27th but on the 14th I started experiencing a light red spotting and not enough to go through a pad or really soak up a tampon, but it lasted about 3 to 4 days and now today I’m having this type of light brown discharge. My periods are usually fairly heavy and will last about 7 to 8 days. I’m a little concerned that this is maybe implantation spotting? I did have mild cramps and that lasted couple days. I’ve just been feeling off and extremely fatigued. I was gonna wait to take a pregnancy test until my expected Period date.

If anyone has any insight, I would appreciate it.

Update : 9/20

I am having light spotting again that’s a little more pink or reddish color and some more cramping again, but on the left side.