Kenalog and low iron

I was given two Kenalog injections during the month of January 2008. My skin had been breaking out in eczema patches all over my body due to a side effect of a sinus infection that I had. My dermatologist gave me two rounds of Kenalog, two weeks apart from each other. The injections immediately cleared up the break outs I was having. Ever since the second shot, I have experienced irregular periods ( My menstrual cycle has always been very regular). The first cycle lasting 15days, which made me nervous. I went to my regular doctor and she said it was probably a side effect of the antibiotic I was given.
My menstrual cycle has been highly irregular. The month of February my cycle ran for 10 days, then stopped for three, started again for another 10days. And now rotates almost every other day. Along with the irregular periods I experience headaches on a regular basis, nausea, anxiety, and I am often feeling lethargic due to the fact that I am probably experiencing low iron.
I was never told the side effects, so I was feeling nervous until I found this website.