Feeling like crap.

This pregnancy has been weird so far, I'm currently 12 weeks today. I've had a stuffy nose on and off so I can't breathe at night most of the time. Im starting to think pregnany allergies due to the bipolar weather though. Then the other thing is I will feel so tired or like I need a day to rest but then when I get like 9 hours of sleep or if I just kind of relax all day I will be feel like complete crap and completely unmotivated at that point. Anyone else experiencing weird things like this.