hi juts wondering if get advise i have been having tummy cramps for couple of days now odd pain, woke up this morning bit nausea and headache mild one.....my breast have been tingly feeling like the are filling up...i did pregnancy test this morning negative...my period not due for another week...please could this be ova lating....i am not on pill havent been for 2 years  now...as i have got 5 children already....