just took my 4th t-200 brovel shot yesterday. every single time, the injection site has swolen and turned red and been itchy and is slightly warm to the touch. it is about the size of a quarter. i clean the site very well and use new needles. i took 300mg yesterday and the same thing happened when i looked at it this morning. what could this be. should i be worried. just a note, the red spot of my first injection three weeks ago is almost gone but there is still a hard lump under the skin. any ideas.