And since I have to mention one of my all time favorite series [okay, all time favorite] - Home by Nan Smith - I forget which one she finds out she's pregnant in but they're all worth reading and she's pregnant in at least one of the longer ones and a couple short ones IIRC.
Link to Series Guide And okay - so it's Lori not Lois but close enough
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Carol
Oops missed the 'happy' part - but they end happy...
