i have had my gall bladder removed in april 2012, was on meds for pain and had 2 normal periods after that (may & June) and have missed 2periods and going on the 3rd missed period. i have noticed changes such as nausea, headaches (almost migraines), acne, fatigue , whitish/yellowish discharge (not a whole lot) and about a 6lb wt gain since june. i have taken 9 pregnancy test, 1st was positive but very faint, waited a couple of days and came back neg, waited about 1 wk and came back pos. again very faint waited some more and took others 1 more pos and the rest neg. i have taken a blood test and came back neg. what other things should i look for.when i had my blood test for the gallstones they came back neg but yet i did indeed have them after an ultrasound. any advice please would be great !