Hello i have the following symptoms which even an ecg and x-ray cannot detect. pain on my left lower obdomen with it is neckpain and chest discomfort?

Hard to tie together: the symptoms you give are difficult to put together as stemming from one entity . Considering your age, the most likely cause of all three of your symptoms having the same origin is you overstrained your body's muscles and ligaments with some activity. Neck problems can refer to the chest and lower abdominal pain can be because of constipation or colon inflammation. See MDS again if persists.