Covishield 2 dose. For blood clots etc?

Hi all.I took covishield vaccine on Aug 4 iam planning to travel gulf so need to take 2 dose this coming sept 4.My query is when I took first dose of covishield vaccine I got severe shortness of breath later it reduced.Since year iam having upper back pain and shortness of breath.Hrct chest in 2020 Aug showed bilateral minimal plueral effusion and infective etiology,mri complete back normal ,cbp normal,thyroid,crp,serum creatinine serum uric acid lft lipid nt pro bnp,urine test all are normal.Iam just worried if I will get heart attack bcz I will sometimes have this left chest pain,continous shortness of breath and continous upper back pain since a year.After first dose I got so much shortness of breath.Can I take 2 dose or will I be in any danger for blood clots etc?