Sodium and Headaches are kicking my butt

DH has been out of town the past week or so, and that meant that I was on my own for all of my meals last week.  Initially I was thrilled! It meant that I got to make all of the random things that I always want to make that he doesn't like, or continues only to be a side dish (and thus is too much work to make just as a side.)  I learned that he's probably right about the "side dish" theory - turns out most of these things are pasta, rice, or potato based.  Lots of carbs, pretty much zero protein.

But what these dishes also seem to have a lot of is sodium.

I have been so dehydrated lately.  I try to drink water and I am going to the bathroom constantly, but I still feel incredibly thirsty and dehydrated.  My lips are chapped and cracked.  It's like the water is going in one end and out the other without really being processed or dealt with in a way that could help my problem. I've tried sports drinks too, but only in moderation because those have sodium in them as well and I just feel like I already have way too much sodium in my body.

This dehydration problem has been keeping me awake at night.  I wake up, panicked and parched, drink a ton of water go to the bathroom and then repeat it an hour and half to two hours later.  Waking up 5 to 6 times per night recently is NOT cool, at all, especially considering that I was doing so well previously with my sleeping.

Is this a pregnancy thing? Or is it really that I'm just eating too much sodium?  I'm going to try and be more cautious of what I eat, but if cutting out the sodium doesn't help, then what?  I've also noticed a crazy spike in weight gain (like 5 pounds in a week) which I KNOW is mostly water retention because there's no way I ate enough calories to actually gain that much.  I'm thinking that once I can get the dehydration under control that number will also drop, but again, I'm not 100% that sodium is the culprit.

On top of all of this, I have had a headache for the past 3 days or so.  It is excruciating and just borderline migraine.  Every once in a while I feel like I'm going to throw up and I think it's become a migraine and then the intensity wanes and it's tolerable (but still horrible) once again.  I guess that means it's probably a migraine, but I think I'm in denial about that.  I am just not interested in figuring out how to deal with a migraine without my medication.  I've been so lucky so far, at least on the headache front, but I have a feeling this is going to be a bad one.....