Hi Sarah, In the last 10 months I have been "tracking" my cycle I have had 2 which hit 35 and 43 days repectively - only BFNs and AF showed up. Ican find no reason for this (maybe I O'd later?) On the 35 day cycle I had lots of pg type symptoms! Maybe you could go to docs for a blood test? I know this isn't easy to do with small children - but it may ease your mind. I hope you get the result thats best for you - whether it it a BFN or BFP! Keep us posted!