Possible Parasite! HELP!!!

Question
I have a red-tailed boa constrictor. She's about 7 months old, and she hasn't kept a substantial amount of food down in months. She is offered small fuzzies or pinkies, and she'll either eat them and throw them up or slither away from them. Tonight, she was drinking a whole lot of water for about 20 minutes and then shortly after regurgitated it and went still for a short period of time. She seems so skinny, and I think she may have a parasite. Even her skin is folding over like she's almost drying out. AND she has only shed once in the 7 months I have had her. What do you think is the problem. Please help ASAP!!!

Answer
This snake doesnt sound well at all. She may end up dying if you dont get her to a vet. When they regurgitate it destroys the acid in their stomach and it means they should not be fed for at least 2 weeks after. What are your temperatures like? If shes dehydrated which is possible from all the throwing up then she needs electrolytes and not just water as that will not rehydrate her. If you think she has parasites then you need to get a vet to test a fecal sample from her. Take her to a good reptile vet asap please to ensure she has the best chance