Am i not eating enough?

EllennD

Ive lost a total of 45 pounds so far, however just before the xmas period i was ill so wasnt exercising and was consuming about 1400 cals a day for a week (junk foods), during this i lost nearly 2 pounds.

now im back to exercising and eating 1200 (eating back exercise cals)

so my question is how much should i eat?

im 19, 5'7 and 131 pounds