Talk to your doctor and tell him you are still having anxiety attacks while on Paxil.
He may increase your dosage and/or add a benzo. I happen to have a pdoc who is pro meds and has no problem changing up my meds to help me.
I've been with the same pdoc for twenty years and he knows I don't abuse the meds he gives me.
Don't be so quick to increase your dosage, more is not always better. IMO, adding a benzo may be more beneficial, then upping your paxil.
I'm not a doctor and can only tell you about my experience. Be honest with doctor and be active in your treatment plan.
Hope this helps!