Is Direct Inhalation Of Plastic Fumes Harmful?

Hi I m a pretty healthy 18 year old girl and long story short I have an anxiety disorder and one of the only things that genuinely helps is smoking weed. I went on vacation with my family out of state that I couldn t get out of and I had no way of getting a pipe and I couldn t find anything in the hotel other than a water bottle. I burned two holes in the bottle and wrapped it in aluminum foil so I could use it as a pipe because I was desperate. I used it once a day for five days except for the last day when I used it four times (so about 9 times total) and I wouldn t smoke for very long because I wasn t trying to get high just not feel anxious. I learned after the fact that plastic fumes are highly toxic especially when directly inhaled and when I came home the next day I was in the gutter. I had already not been feeling good when I left for vacation such as coughing and feeling nauseous but I felt like I was dying when I returned. I went to the ER: I had a high fever, vomiting, body aches, migraines, terrible cough, lot of mucous, the works. The doctor said I either had bronchitis or the flu so he would just treat me for both, however I really think the PVCs have everything to do with why I feel so bad. I ve been taking antibiotics and medicine that have really helped, and in the past two days my fever has gone away and I stopped coughing up mucous, but I really just want to make sure that I m not ignoring the real problem. I ve looked up as much info on this as possible but I m really just looking for someone to put my incessant fears to rest and tell me that I don t have cancer. I m very scared.