Husband constantly throws divorce up.

My husband and I have been together almost 7 years married only 7 or so months. We have a 9 month old daughter together. We got married after she was born but was planning on getting married sooner before we found out we were pregnant. Anyways, I don't like to talk to people in my life about my relationship problems. But my question is what were the signs, emotions, and actions before you decided to split and get a divorce? Besides cheating and abuse. And I honestly am sad but sometimes I feel more scared of the unknown before I feel sad about being single again.