One of the symptoms of low magnesium is nausea/sickness.
In pregnancy it is widly known that womans guts slow down, one of the affects of this is we no longer absorb as much magnesium as we are used to.
It never used to be a problem in years gone by as we would bath and swim in water which was rich in magnesium (streams, sea etc). Skin absorption is a really affective way of getting magnesium. however now water is treated and the magnesium is stripped out as a side affect.
I actually sprinkle my veggy patches with epsom salts to add it into the soil for my homegrown food!
There are 16 signs of a magnesium deficiency. (Do they remind you of pregnancy symptoms).
As low magnesium can cause low potassium... You can also get the low potassium symptoms on top... (which funnily enough also resemble "typical pregnancy symptoms").
In my first 2 pregnancies I was admitted multiple times to hospital with hyperemeses, as i needed IV fluids due to the fact I was vommiting 40+ times a day. and not keeping even sips of water down. at one point I completly lost my vision, fainted and my blood pressure dropped very quickly.
With my 3rd pregnancy some recommended i try magnesium spray as it had helped them with their sickness. I headed to holland and barrett, bought some and sprayed myself there and then. Within 10 mins i felt SO much better, and 30mins later i was eating a nandos.
I started taking epsom salt baths 2-3 times a week, and in between sprayed myself first thing in the morning, waited 30mins then showered. (I didnt like the spray being left on my skin). I had no more sicknes in that pregnancy.
With my 4th pregnancy I did not have the magnesium spray to hand.
when the sickness started i was knocked for 6. 5 days later i had not kept any food down and ended up in hospital for IV fluids. I was given antisickness medication which i had a bad reaction to. So i had to stop taking them.
My husband started rubbing magnesium cream on my back every night, and first thing in the morning, and it halted the sickness. We both forgot one day and the sickness was back :( From then on we didnt forget!
I am not a doctor and obviously this is based on my own experiance, how every i think it is a really interesting subject and should be looked into more with health proffessionals.