Sorry to hear you're having a rough time. I know these dark places well. Trust me when I say, it does get better.
Two weeks is still very recent. I was distraught for about three or four, then slowly improved, then relapsed at the six week mark, and then steadily got better. I'm now three months out and I wouldn't take my ex back even if hell froze over. With the trauma bond finally broken, I've seen him for who he is. And I don't like that person at all.
Journalling, exercise, self-care... you are already doing so many great things. Kudos to you. I know I wouldn't have had the self-discipline to do yoga or take walks after only two weeks.
Therapy is a really, really good idea. If you can, and you feel the urge to talk to someone, call a hotline. Sounds stupid, but it can really help. I rang one once while I was still together with my ex and the person at the other end of the line told me in no unclear words that I was worthy of love, and that I would be able to find it. I'm not easily moved but this touched me very deeply. It was almost as if something greater, something good had called out to a part of me which I felt I had lost, but which in reality still existed. All from a chat with a stranger. – The people working these hotlines are usually either naturally empathetic or trained to be. It could be a decent makeshift solution until you find someone more permanent to lean on.
What made things worse post-breakup in my case was the complete collapse of my daily routine. So if you can somehow add structure to your life, by all means (though I suspect you already have it, with all your activities and your dogs). I was a complete wreck and only dug myself out of the hole by setting miniature goals: Week 1, stop being late to appointments. Week 2, go to bed before midnight. Week 3, get up before 10AM. Week 4, do light exercise three times a week. Etc. Slowly but surely, the life I'd had before my ex had entered the picture returned. And it turned out it was a good one.
Gratitude journalling helped, too. I use a very simplistic app named Presently but I can see how pen and paper can appeal, too.
And I while I never used to believe in affirmations and visualisation, they've grown on me this time around. After a breakup it's often difficult to imagine an ideal life, because we're still craving the presence of our ex so much that nothing seems worthwhile. I promise this, too, will get better in time. Affirmations can help find the thread of what it is what you want, kind of like a rough sketch. Visualisation is filling in the details and mentally colouring in the picture.
It might not seem this way all day every day, but you've got this. You've survived worse than this.
