I'm a 23 year old female who has been having chronic health issues for the last ten years or so, but still I have not gotten an actual diagnosis. I have bowel and stomach problems, such as alternating diarrhea and constipation, severe bloating, constant nausea, greasy and fatty stool and gas. I also experience chronic headaches, have problems with my joints swelling and becoming weak, sometimes making it hard for me to walk, a constant throat clearing and post-nasal drip like symptoms and experience random spells of lightheadedness and dizziness. The first incident I recall when most of my health issues seemed to start was when I was around 17, I woke up one morning and for some reason was unable to walk due to heaviness and severe pain in all of the muscles in my legs.
I've had a lot of tests done to try to figure out what is wrong with me, and I'm so beyond frustrated with trying to get a diagnosis. I've had many blood tests done, including blood tests for autoimmune diseases. I see a gastroenterologist who has done a colonoscopy and an endoscopy but has found no answers for my GI problems. I see my PCP for the chronic issues I have for my sinuses, but none of them seem to know. I contacted my parents to go through my family history when it comes to health, and they mentioned that when I was a child there was concern that I had cystic fibrosis due to the fact that I had swollen joints sometimes and I didn't want to walk. Because I was born in Pennsylvania in 1993, newborns were not being tested for CF here at that time. The issues must have resolved somewhat as I was never tested. I remember in my childhood having a lot of problems with nausea, stomach pain, ect., but was never given any answers.
My question is that with all of these tests that have been done and with everything that has been ruled out, is there a chance that I could still be diagnosed with cystic fibrosis at this age now that I'm starting to show more symptoms and see a general decline in my health? I genuinely know that something is wrong with my body and I just want to figure out what it is so I don't have to feel sick every day. Out of all of the blood work I had done, only one was closely-related which was my level of Lipase. I had a level of 7, but according to my PCP that level too lower and is "in the red" compared to what they have as a normal range. Would you recommend asking my doctor to perform further tests for this?