Left chest pain in inner side. Months?

Sir my age 27, no bad habits,like somoke, drink, no habit,left chest pain in inner side in bending some times, sleeping to wake up suddenly pain very high in left chest... In near heart in inner side of left chest... In eight months 20 ecg dones all are normal, 2d echo, normal, lipid Prof normal, sugar test normal, chest x ray normal, and janavary first, comes pain more clarity cardiology doctor dones, #tmt that was negative, renal function test was normal, high sensitive trophononin, that was also normal, blood pressure is high 150/90, cbp was normal, doctor says this was not heart pain simple pain killers give pain not goes completely... Plzz all her at test normal but pain comes iam worry sir.. Next which test dones, which doctor consulted for my pain some ones says cunslt neurologist... Pain some times left neck like neuron pains... Why comes left chest inner pain eight months??? Some test attached...