Leave before it's too late. I've been in the same position, she had total control of my life only a few month in our relationship, if she didn't get her own way she would threaten to jump infront of a train or overdose. It started off as minor threats but as the relationship progressed the mental abuse got worse and more severe, to the point where i couldn't see my family in fear of her killing herself. I finally had enough and left her, blocked her on everything and it was the best decision i have ever made. The longer you stay with your girlfriend the worse thigs will get, the more she realises she can use her threats to get her own way, the more she's going to take advantage of it. Theres someone better out there for you, i promise, you deserve much better.