Not dignosed with a lap yet but I've been to the hospital 5 times with possible appendicitis and 1 time chest pain. I'm 17 and petite so they kept me for chest pain until we realized it was a reaction to a medication and once it wore off I was fine.
The times with appendicitis, I had ultrasounds, urine tests, bloodwork, and was hooked up with an IV and everything came back normal, they said my uterus was one of the best they've seen (which I'm still confused by), they then pumped me with pain killers and water thinking I was dehydrated.
My last visit for appendicitis was in February, they concluded I don't have one because out of all the ultrasounds it isn't there. The doctor came in and gave me a lecture on hormonal comtraceptives gave me a pamphlet and told me to talk to my doctor saying my periods would get better, she said it was probably just 'bad periods'. She then told me to try a few painkillers.