How many pounds of grain? What was your mash temp & time? when I used to PM, and extract w/ steeping- I got so put off with extract sugars' off reading that I only calculated PPG w/ my mashed wort to see how my mash efficiency was doing.....
So long as your mashing was sound, I'd wager that despite your mixing, the extracts sugars may not feel like cooperating.
And the last thing that beer is- is lost- Pitch the yeast and I'm sure your be happy in a few weeks!
Yeah, I am looking at two partial mash recipes from AHS right now.. AHS Belgian White and a Blue Moon Clone (Belgian White).. the AHS original recipe has 2.75 lbs grain and 5 lbs wheat extract to hit 1.048 OG and the Blue Moon has 4 lbs grain and 5 lbs wheat extract to hit 1.048. (the extra pound of grain on the Blue Moon is just oats)
So, the good news is, it actually sounds like you brewed well. It was just a crap recipe. You're probably looking at around 2.8%-3% ABV. You could always spike it with some dextrose or something, but I'd personally just leave it be.
Depending on the specific grains your calculations might be different. But for 3lbs of 2-row + 2lbs of DME I am seeing a gravity of 1.034 using Beer Calculus . homebrew recipe calculator. <-That site always seems to be a little off but its generally not far off from reality.