I became pregnant with DD while nursing my DS and charting. I could definitely tell from my chart, it was very similar to my pregnancy chart from DS. Plus, my LP was longer than 6 days that cycle.
Here are my charts if you are interested. The first graph shows my 2 pregnancy charts overlaid, then under that are my nursing charts.
Here are my charts if you are interested. The first graph shows my 2 pregnancy charts overlaid, then under that are my nursing charts.