1 gallon of 1.050 wort mixed with 1 gallon plain water will give you 2 gallons of 1.025 wort. what size is your pot? you mashed with 1 qt/lb, which is cool, but you're gonna lose half of that 3 gallons of mash water to grain absorption. add 3 gallons for sparge and you're only pulling 4.5 gallons for your boil. that's about what a mash looks like for a 3 gallon batch, probably with less grain though. from your recipe it looks like you're making a pale ale. 1.044 isn't so low. keep some light DME around.