Help!

I know this is maybe a bit too much information but I'm 8 weeks today and Constipation is tearing up my insides :( I can't go except once a week and the cramps ate agony the sickness is horrible and the sweats are exhausting. I'm having so much difficulty with it I ended up in emergency room where they gave me laxatives to take home and put me on a small dosage because they aren't good for baby and they don't even work but I can't up the dosage iv tried everything grapes prunes orange juice fibre nothing working I tried to go for a walk to speed things up a bit but my cramps was to painful so I'm at my wits end lying on bathroom floor close to passing out is taking its tole on me and as a last bet I'm hoping someone out there has some advise that will work with me?