Prozac for PPD.

So I have been on prozac 20 mg for PPD after having it for so long, and not realizing it. I've been on it for a little over a week, and can kind of tell a difference in my energy. I feel more motivated to do stuff, but I still don't feel 100%. I've noticed though, that I have been grinding my teeth alot, to the point my teeth hurt. I've been really hot, like almost sweating. I get flutters in my heart every now and again. Is this normal? I go back in 2 weeks to check up with my OB on how I'm doing with it. I just wanna know if anyone else had this experience while on it.