Two days ago I had had the bleeding in the second picture, then yestarday the one in the 3rd and today the one in the first. I don't know what's going on. When this started I was 9days early for my period and only 4dpo.

The blood today was bright red. I'm guessing the blood in the other two days was darker because I saw it later and also I didn't bleed in between these pictures were taken.

Could this be implantation bleeding?

I will test in a week(when my period is supposed to be here) but until then, what do you think?

Also I started going to the gym and really working out in the past week. Could this be caused by this?