Do I have a chance at winning a medical malpractice lawsuit?

I went to an ER with a headache that I'd had nonstop for 3 days. When I arrived, they realized my blood pressure was high as well. They drew blood and I was sent home with blood pressure medication and told to see my OBGYN the next morning. The Dr. did not do a CT scan or MRI. The OBGYN put me on bed rest. 4 days after my first ER visit, I returned to the ER with same constant headache. his time, the Dr. ordered a CT scan, which he said was routine for an atypical headache. The scan revealed a subarachnoid hemmorhage. I was taken immediately by helicopter to an ICU at another hospital. At this time I had 3 children at home, one being a newborn. For almost a month, I was useless to my chidren. My husband missed weeks of work. I was told by my OBGYN that I shouldn't have anymore children (which I planned on doing). I'm wondering if any of this could've been prevented if the original ER Dr. had performed tests, and if I have any shot at winning a malpractice case. I'm a 29 year old female