Leopard gecko impacted...

Question
QUESTION: Ok,so I bought a leopard gecko,I have experience with geckos,I bought it from petco and when I checked her she was fine and she was on reptile carpet,well it was for an tank for a little while.I didnt think about checking the main tank which she was in at first.I bought her home,looked at her again to see her sex which I did in the pet store,noticed she had purple,so me knowing how to treat a minor case putting her in a little warm water and using mineral or vegetable oil on her nose,I did well i'm still waiting for an result due to the fact I did it a little while ago.Just want to know if theres another way to get the sand out.My leopard geckos cage=Night glo light,30 gallon cage,reptile carpet,crickets coated in calcium wih and without 3d,water bowl filled with bottled water,moist hide that I bought,and 2 hides,and one more female leopard gecko,there both females.The purple on her belly goes from purple back to normal then purple.I'm sure it's not vet worth,its only a little pruple spot.The geckos or both the size of adults,about 3-5 years of age,she's eating waxworms and crickets with calcium.
i'm feeding her crikcets until the end of next week or until I get poop out of her,I fed her 2 waxworms and no more.It's not badly impactede,just a little,but I dont want tohave her impacted.

ANSWER: It's not necessarily sand, you're seeing in there--it could be dark insects in her intestines, or minor bruising.
A drop of vegetable oil won't hurt.  I recommend feeding her as much as she will eat--if she has an impaction, she won't feel hungry (intestinal blockages cause nausea).  If she's eating, then whatever it is will move on through pretty quickly.

Don't feed waxworms often unless the geckos are too thin.  They're very high in fat.  Other good choices include zophobas (super worms), butterworms and silkworms, feeder roaches (if you can get them, Dubias are great), and the occasional pinky mouse.  Gut-load anything that will eat, and dust insects with calcium + D3.

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QUESTION: Thank you,also I do give her calcium with d3,she was very thin when I got her so I decided to feed her a waxworm or two,I feed her mealworms,superworms,crickets that are dusted,trying to get a pinky because it looks like shes about to lay an egg.She didn't eat in two days but I think she got addicted to the wax worms,I fed her 2-3 because I was trying to get one out and left the cap open and she snuck some out...the cricket was running away and,yea.It was my fault but,yea.Anyway thank you and I'm gonna be watching to see if the other geckos bullying her and stressing her out,but I dont think she is,I'm gonna check if shes using the bathroom.Thank you.

Answer
Pinkies aren't really necessary--the most important thing if she's going to lay eggs, would be extra calcium.  If she does have eggs, you should be able to see 2 of them through the thin skin of her abdomen.  The addictive properties of wax worms are a bit overstated--if her appetite doesn't pick up substantially, I would suspect parasites and have the vet do a fecal float.