pregnant or just a scare. READ!

So I'm not late, at all. I just got over my period on the 6th of this month. And I started my birth control the third day of my period as usual, I've been taking it for over a year now same time, everyday. And 3 days ago I started getting headaches with slight nausea, could be due to stress since I suffer from extreme panic disorder. And today I have sore sore nipples, only when I touch them. But I am on new medicine for my depression aka cymbalta. And that could possibly cause nausea and headache. Is it worth it to take a test? Hm