Light spotting after period

Hi there,

So I had my period 8 days ago. Everything was as it should have been, nothing unusual in its routine. And then my boyfriend and I had protected sex 2 days ago. However, although we used a condom, after we noticed that the semen did not stay in place at the top of the condom, and it might seem that it had leaked a bit down the condom. However, we don't think it got out of the condom.

I've never had light bleeding after periods. That is why I am worried

Any advice?