I have intense fears of abandonment i go from thinking the world of a person to thinking they are cruel and dont care enough. i get mood swings is this a sign of anxiety?

Life often sends us challenges we find difficult. It is a good reason to have a talk with your doc. If you have a good checkup they can refer you to a life coach to learn the skillset needed to face your stressors with more confidence. While you learn these techniques they may uncover some triggers to the thoughts that you can learn to handle better.

Recommend seeking a counselor to address the volatile emotions and mood swings. Have found great outcomes working with a cognitive-behavioral therapist. You might consult a psychiatrist if your emotional status is worsening. Yes, anxiety is playing a role, but suspect your issues are more complex.

It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests. It would be prudent to see your doctor and discuss if you may be depressed. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Drink more water. Wish you good health!

Professional help may be the most direct route to feeling better. There are many kinds of therapists which may be helpful. A psychiatrist is able to prescribe medications. Other providers can provide support, cognitive techniques, and connections to others. Best wishes.