Melly--as Pipefish just said---it has been a very short time. You are grieving. Grief feels the same--whether the relationship were healthy or toxic for you. Go figure! When we invested ourselves--the loss just plain hurts.
Go ahead and cry--that is mother nature's release valve. Go ahead and feel the pain and emotions--the anger, the sadness, the loneliness. I venture to say that everyone on this forum has been in your exact shoes. I have.
You will get through this. It will pass. It is short-term pain for long-term gain.
Keep posting--and vent anytime you need to. You are not alone!
dandylion