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Hello 

I'm 25 years of age. My and my DH have been casually TCC  for a month and half.

I've always had a 28 day cycle and a period that lasts 7/8 days 

this month my period has been rather odd and haven't experienced anything like it. 

AF was due 20th sept but I started on the 21st. It lasted 3 days (with normal flow) and by the 24th there was no bleeding. 

Since then I've been getting a dull cramping sensation in lower abdomen below belly button. I feel much hungrier than usual and get more headaches. I also feel like I've got urine infection past couple of days. I'm more emotional ( I cried yesterday over something small) and also noticed the absolute faintest wave of nausea. 

I did a pregnancy test on the 27th. First thing in the morning and last thing at night using two different tests. Both came out negative  

I'm don't know why my period was so short, could I still be pregnant?? 

Please help... It's driving me crazy