Does this sound like pregnancy?

I had unprotected sex 14 days ago. My period isn't scheduled until next next week, however it can sometimes be irregular. But, it usually comes every 25-32 days. Yesterday, in the morning I noticed spotting when I went to the bathroom. It was pink. Im going to give it a couple of days before I test. I've never been pregnant before, so I'm hoping someone can give me some insight as to if this is normal or not. If I am pregnant should I expect to see spotting? & how common is it to spot?