Thanks unhappyguy for reassuring me its probably not more serious - I don't feel as worried. Thanks also to Hankster for replying to both my threads. Thinking back I wish I would have waited but my doctor said as long as I don't have a fever it would be alright. Had no idea the arm would be more painful than the typical flu shot.

I also have some lymph tenderness in my armpit on the same side. Since this came on suddenly yesterday evening and is the same side as the shot....hopefully this is reaction to the shot or the illness I have ATM. I didn't even know there is lymph nodes above. Hopefully it will go away soon. I went to the drugstore and got some Oregano Oil - this is great for killing viruses and bacteria. Heard on the radio a few yrs ago, it great to stop sinus infections. Thanks again to both of you.