Welcome to the Board, dtdionne...
It is unlikely that the test is accelerating your MPB (male pattern baldness) at this stage, although MPB can be a side effect of using testosterone.
Assuming the test you're using is 200 mg/ml, however, this is not a low starting dose for HRT (hormone replacement therapy). The usual starting dose is 200 mg every three weeks, not every week. Most guys end up using 200 mg every two weeks, which they split into a weekly injection of 100 mg - this is recommended in the American Association of Clinical Endocrinologists guidelines on hypognadism in order to avoid the peak-and-valley effects of test. You can get the guidelines in a PDF (Adobe Acrobat) file at this link, and they're well worth reading - they are the same guidelines used by all endocrinologists.
If you have not yet done so, check out the Over 30 Forum here on A.R. There are several threads that deal with HRT and the therapeutic use of testosterone, and you'll find them more focused than the test-related threads in the Steroids Forum.
Again, welcome to the board.