Travelling during pregnancy

Hi all,

I am pregnant with my first child. Now I am in my first trimester (just entered into my 3rd month). I have no health issues other than mild vomiting and nausea at times. I am working, so I concentrate on so many other stuff rather than thinking too much about pregnancy discomforts, hence I dont feel I have any

Here the problem is... I checked my blood sugar level last week... It was just 80 (the range was 80-140). It was not the fasting one, but the one we take 2hrs after having lunch (I guess I did it right).
Also my Hemoglobin was just 11 (the range was 12-14).. Basically both my blood sugar and HB stands a little lower than it is supposed to be. So, I am (rather my hubby) is worried a bit about it.

Here the problem is... I want to attend my sister's son's b'day party tomorrow.. It is just 3 hr drive by road. When consulted our Gynecological doctor, he advised to go ahead. But we havent had a chance to meet him with the reports last time... Concerning the reports, what you guys think? Shall I proceed tomorrow or wait?