Spotting question

DanielleRM
Hello ladies, I have a question. AF just visited from the 22nd-24th with light spotting the 21st and 25th. My cycle usually lasts anywhere from 33-36 days. 
Just now when I used the restroom I noticed VERY faint spotting, do you think this is anything to look into or should I just ignore it? 
We are trying to get pregnant and are fairly new to it, so there is a lot we don't know. I know spotting can be a sign of some things, but I'm not sure just three days after AF if it really means anything or if it's just random spotting. The directions on my ovulation tests recommend I start testing on day 16 of my cycle with a 33 day cycle, so it seems too early to be that. I'm just a little confused and would appreciate any help. Thanks!