Spotting?

We’re trying to have a baby. I had one incident where I didn’t go along with the pregnancy about 4 years ago due to relationships ship issues with an ex. My current boyfriend and I are really trying. I was suppose to start my period yesterday which I was very lightly spotting and then it went away. Today I am still very very lightly spotting.. last time I ended up pregnant with the ex I spotted for a day and it completely went away.. do you guys think we may have done it this time? Or is it just the possibility of my period starting? :(