Constipation issues

So I am 19 weeks and have been severely constipated due to HG since 7 weeks. I think I go #2 once a week, and I’ve tried everything. Fiber supplements, increasing fiber intake with food, taking milk of magnesia every now and then to help me go. The thing is, I’m so dehydrated 80% of the time, and Zofran also plugs me up, so until I can intake my water and take less Zofran (not an option at the moment because I will throw up 20 times a day).

Every time I feel constipated, it doesn’t hurt, it just feels uncomfortable. Like I have to go, but just can’t. Milk of Magnesia usually gets me to go within 30 mins. I take it when I feel I need to go. Today, I was hit with the most awful cramps. Like stomach pains that come when you have diarrhea. But I can’t go. I took milk of magnesia about 5 days ago and went, so I’m not sure why it’s hurting so bad. But it is. Any tips, I haven’t taken milk of magnesia yet but I think I might. It just makes me nauseas. 😔