Pregnancy test?

Ok so I had sex a few days before I was ovulating and the condom broke. The next morning I took a plan B. I bled a little for a week and that was it. Now, i’m not really sure when my period is gonna come. It’s due at the end of this week. i’ve been really tired, bloated, moody, and eating so much. these are all PMS symptoms but i’m also worried about being pregnant and have a major exam coming up. should I take a test?? would it even be accurate rn??