Hello.
You may be experiencing ongoing symptoms of anxiety. They need not be full blown panic attacks. You may also need to check if you have your blood parameters within normal limits. Anemia (low hemoglobin) can also lead to similar symptoms. Low blood sugar can also cause similar symptoms. You can consider a GP's consultation and get these tests done (hemoglobin and blood sugar) to start with.
If these symptoms subside on their own, they might be anxiety related. You can try re-breathing in a paper bag to see if the symptoms subside. This will just be an indication that they are anxiety related.
Hope this helps.
Abhijeet Deshmukh, MD
(This post is for the purpose of providing medical information and is not a substitute for a face-to-face consultation with a doctor. This post is not intended to give or rule out a diagnosis, create a doctor-patient relationship or replace an existing one. I am not able to diagnose medical conditions online. Please consult with your doctor or a qualified healthcare provider for diagnosis and treatment options)