Irrational Fear Or Premonition?

Please answer this question, I am literally freaking out right now.

I have struggled with anxiety and OCD all my life. About 3 weeks ago, I was watching a YouTube video, and when it got to the time, "6:22," a Snapchat notification popped up. At the time I was 14 years old (my birthday is April 27), and N is the 14th letter in the alphabet. 2 is my unlucky number. So my OCD of course made me start to believe that I was going to die on June 22 (6:22 on the time). So for the past few weeks, I have been OBSESSING over it, not even joking, thinking about it 24/7, terrified that something is going to to happen to me. WELL THEN, a week ago, I was riding my bike, and out of nowhere, the word "cremation" pops into my head. 3 hours later, the name "Rosemary" pops into my head. That is the name of great aunt who died a few months ago. It can't be a grieving thing, because I barely knew her. But the problem with this is, I don't know if those were premonitions, or just thoughts that popped into my head because I had been obsessing over it for the past 2 weeks. And let me note that those words randomly popped into my head when I wasn't even necessarily thinking about it. I've had about 5 panic attacks over the past few weeks and this is so debilitating it is taking over my life. Now literally every time a thought pops into my head I think it is a premonition! I have never even been one who ever thought about suicide, in fact up until recently I've always been a happy person, and this is just ruining it for me. I am on Zoloft but that isn't seeming to help.

I really hope this is just my anxiety. I have an appointment with my therapist tomorrow and hopefully it can be resolved there, but please answer my question, on at least what you think about it.