Out yesterday with friends on a bus trip been walking a bit had lunch got back on bus then got cold sweats and stomach pain , the sweats got severe and a retired nurse on bus thought i might be having heart attack or severe adrenalin rush lay down for a while and symptoms eased. I have secondary metastatic breast cancer in spine, still feel whoosey abd headachey.
Namaste Welcome to Chat Doctor Greetings of the day It's common to have headache after such a bout.  Relax don't be worried.  Be on regular follow up with your Surgeon for Breast cancer Regards Take care