Hi, thanks for writing. My name is***** am glad to hear you are feeling some relief from the Paxil. These meds do typically start to take the edge off anxiety pretty quickly so you may be benefiting from the med a little already. That should hopefully expand over the next few weeks.
As far as the physical symptoms - my guess is these have been a combo of effects from both the meds and also the anxiety. As far as the meds, this class of meds (the SSRIs including Paxil and Zoloft) has a pretty common set of "activation" side effects like headache, nausea, spike in anxiety, spike in depression, impacted sleep, and general feeling kind of crummy. These effects tend to start pretty soon after you begin taking the med as your body gets used to it but very rarely last more than 30 days. These are quite common and as long as they are considered to be just uncomfortable but not intolerable it would be recommended that you keep taking the med as the side effects should dissipate just about the time the med starts really working.
As far as the physical symptoms being correlated to your anxiety, this also commonly happens. Anxiety manifests itself in alot of physical ways - stomach discomfort. chest pain, lightheartedness, GI issues, etc. So it could well be these are part of your anxiety as your symptoms are all typical experiences when anxiety is present.
In summary, your anxiety is probably causing some discomfort and the meds probably added to that due to their early side effects. I think it is ideal that you keep on taking the Paxil and power through the first few weeks which will allow your body to adjust to the side effects and subsequently continue to feel relief from the anti-anxiety components of the medicine. If you do start to feel things getting worse or side effects are not gone in another few weeks, then you should talk to your doctor about considering an alternative med to the Paxil. You also could consider reducing the dose of the Paxil by half and working your way up more slowly but you are already days in so this may not be ideal as it may delay the help from the med even if it reduces your potential side effects.
I hope this helps and I hope you continue to feel better!! Last thing I;ll add is that the ideal treatment for anxiety is a combination of medication and counseling so if you haven;t considered working with someone trained in the behavioral aspects of anxiety, this can be REALLY helpful! http://therapists.psychologytoday.com
-I am here to hat more if you'd like,