Angry angry symptoms and conditions

I used Nuva Ring about a year ago and decided to stop using it due to major mood swings, (Going from laughing to crying in a split second) but I recently decided to try it again, as I liked the conveinence of it and the fact that it's the only birth control I've used that hasn't made me gain weight. Well, I've had the ring in for about 2 weeks now and I'm not liking it!!! I've been feeling extremely fatigued, nauseas, constipated, experiencing heartburn, having brown spotting and abdominal cramping. I don't know if I should keep this thing in or take it out. Right now, I'm feeling sooo nauseas I'm contemplating going to the hospital.