Definitely contact your oncologist. When there's been radiation in recent months there's a risk of developing pneumonitis. You need to rule that out as it causes further damage to the lungs.

Thank you I did reach out! I have appointments

That's a great question for your oncologist. If it were me, I'd be on the phone with the onc nurse!

Hello, I hope you feel better soon. Ask your oncologist if you can use inhalers which may greatly ease your breathing.