Loopiness?

Last night I took a bath. It went fine for the most part. But after being in there for an hour I started feeling "high".

I haven't slept much in the last few days because I have to work at 5am and getting sleep has always been hard for me, but for some reason I thought that being pregnant in this early stage may have messed with my brain.

I lost my balance a little and I felt like I feel when I am tipsy. Is this weird? I was also very tired, so I went to bed and I couldn't keep my eyes open for long. Slept about twelve hours.

I know it's probably due to lack of sleep, but why did I feel high?