 [ Symptoms ] can lactose intolerance cause weight gain if all my food rushes through could my body be overdoing calorie retention  if all the food i eat constantly rushes through could my body be overcompensating and desperately trying to get calories out of food because it usually rushes out  i have timed my body before and high lactose items last 15 minutes until desperate release this sounds like the gi may have to be in high gear just to try to absorb food if it is in this gear when i do not have lactose i feel it may be a reason for weigh gain or retention [ Disease ] most probably you are not pregnant as it is not possible to get pregnant on these basis however the period is normal to stay for a bit longer as your body hormones are still adjusting to the device is the amount of blood normal as usual periods or different is it heavy do you have dizziness