Chest heaviness and pain. Rid of this?

My Ecg is normal sinus rhythm,echo was normal done 3 months ago(ef=65%), .but tmt was positve  but my invasive coronary angiogram report is  normal arteries with slow dye clearance, microvascular angina just one year ago(2024 december,dated 21/12/24).calcium score was 0 in 2023 ct cag test report ( november, 2023)too, hs crp value is 0.48,, HDL 64, ldl 54, tg 42, cpk mb 19( ref was <25), creatinine 0.72, hb1c 5.2. bp remains low most of the time between 100-115/65-75, pulse rate normally 54- 70 bpm. I feel discomfort and tightness & heaviness like feeling & pain on the left chest & upper chest while walking  moreover feel palpitation type of sensations when i wake up in the morning sometime. I walk 30 minutes every day. Non smoker, non alchoholic, non diabetic. Is it a heart related problem? Do i need to go for another angiogram? Please help doctor, i am very anxious. How to get rid of this? Plz suggest doctor. Reports are attached. Thank you