To test or not to test

So according to glow I'm a week late and I'm not sure if I should test. I have a child already but I didn't have any symptoms with my first pregnancy, I went to get BC and found out I was pregnant. I'm not sure if I'm having PMS symptoms or what but I feel strange. I have pcos but my periods are regular. I kinda feel nauseous I'm always sleepy because I work 10-12hrs daily. We would like another child but I just don't want to get my hopes up and then get a bfn. I feel a little strange but Idk what I should do.