testing

I know taking a test in the morning is always best for clear results, but can I take it mid day, because the anticipation is killing me! If I'm pregnant it should still be clearly marked on the test, right? It may sound like a dumb question, but I'm just a beginner. lol I just don't feel the same, my last period was only spotting for a day, bleeding for a day, then spotting again. I passed it as just my period, but I haven't had any signs of pmsing or anything, just sore breasts and bloating. I'm tempted to go buy a test now!