I was diagnosed wjth TOS and had my left pec minor cut 4 months ago

I was feeling better and back to lifting and running and about two weeks ago I started having this horrible pain below my armpit and below my scapula. I also have headaches and a tight scalene on the left side

I have good days and bad but when it’s bad I feel like I’m going to pass out it’s so bad

Please tell me there is hope with conservative treatment ? I’m scared to stretch or massage or lift in fear of flaring it up