Are there any online tests that can advise if you have anxiety issues? it is too expensive to seek professional diagnosis for an uncertain hunch.

Anxiety : There are rating and screening tools available on line that you can use to get an idea for that best is to get a clinical assesment done.If difficult to get in with a psychiatrist seek a phd or lcsw for assesment and have your pcp prescribe meds anxiety is like a slow bleed and can affect overall functioning and damaging to other systems digestion respiration heart sexual health etc get help.

There are but..: http://www.mentalhealthscreening.org/screening/default.aspx the above link is one of many community mental health centers in the us who have offered on-line screening for anxiety. While helpful, reaching out to your primary care doctor to talk about your concerns and symptoms (such as stomach aches and muscle tension) will be far more complete and reassuring $ include a plan to adress the causes.