I am a 44 year old lady and have been told iam sickle cell trait for many years now. what i need to know is could i still get a crisis as i ended up in hospital recently with stomach pain and ended up having my appendix taken out. However when this was done they were perfectly normal. I have had various visits to hosp for joint/abdo pain on numerous occassions and nothing has been found. Please can someone help with this problem?