Eek, could I be pregnant?

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It would be crazy because, with a 6 month old, we rarely have sex. My milk supply has been decreasing a lot. I used pump 8oz at 7:30 and 8 at 10:30. Now I get barely anything at 7:30 and maybe 5 at 10:30. A week or so ago I had a feeling in my lower abdomen that was similar to the feeling which caused me to test with my first pregnancy. I would be so surprised if I was, and totally freaked out haha. That would mean kids 15 months apart.