Minor discomfort in chest - left side.

Hello Doctor, need your guidance. I have been feeling minor chest discomfort on left chest since 3-4 days. No pain. Feel it mostly while resting or sleeping. Looking at the discomfort, I feel it could be due to working from home on laptop in Slouching position due to no proper infrastructure at home (working for 8-9 hours continuously, sitting on my bed) OR sleeping in wrong posture (I use 2 pillows, mostly sleep on stomach) but not sure. 1. I have been regularly exercising (except 2 months gap due to lock down), started jogging since 3 weeks - jogging 4 km per day 2. I'm 33 years old, No health issues, but have over weight 3. I used to feel like this earlier (sometimes) after doing chest exercise (weight lifting) but used to get recovered within 2 days. 4. No gastric problem, but sometimes I over eat and eat spicy food most of the times.