I agree with Kris. Another point I'd like to point out is that your period was 6 days long. Even though it was light that can't be considered "spotting". I, unfortunately, can't give a 100% one way or the other and I know that's what you're searching for. If you feel that you have to know NOW 100% take a test. Otherwise wait to see if you miss your next period.
Remember this feeling, fear of becoming pregnant with the next time you consider messing around. Is it worth it to go through this again, the stress, wondering??
