Anyone Else have horrible constipation?

At 12.3 weeks,  I have had horrible constipation and it's only gotten worse. It's to the point where I eat something and I get full and can't eat for like 6 hours because it's painful. I drink a lot of water, and eat a decent amount of fruits, vegetables, and yogurt. But it's hard to get rid of the constipation when it hurts to eat and that's what you need to do to make it go away. Any remedies without eating something? Drinks of some kind? Safe for pregnancy obviously. I'm just miserable!