((((((((Abby)))))))
So sorry to hear that you are in so much pain. Thoughts of self-harm are often made much worse when you are surrounded with people and have to put on a good face.
The fact that you are resisting the urge to self-harm is an indication that there is a strong and confident person inside you that wants to avoid these thoughts. A strong person who will get you through this incredibly hard time. Try and draw on her strength, and be kind and gentle with yourself as you are with others... because you deserve kindness too.
Keep posting on here, and if possible, try and reach out to someone so that you are not the only one who knows these burdening thoughts.
Jacq