new ball python, weight

[zato1]

I just bought my BP last saturday, the reptile shop owner said it was 7 months old, and i measured it at 19 inches. But out of curiosity tonight i weighed it, and its 100 grams. Isnt this way under weight? The store owner told me she feeds it every 2 weeks so maybe thats why? I will be doing its first feeding since owning this saturday, and will be doing a 7 day feeding schedule.

So should i be worried if it doesnt pick up some weight after a few weeks?

im not an expert at all, im kinda new to the hobbie, but i have seen lots and lots of BP at 7 months and none is 100 grs, at least 250, i mean at least, i think about 2 answers, 1 its very underfed or 2 its not 7 months. good luck