Please see a doctor for the physical symptons. I'm glad you've joined us on SR, this is a helpful forum to many good people in recovery.
It does get better, much better, for me it's better than I ever dreamed it would be.
But it doesn't happen without constant effort, determination, work, and faith. I waited to feel good for a long time in early sobriety, but nothing happened until I took action. For every day of effort I put into my recovery I'm rewarded with a life that's richer than I thought was possible. But that means daily AA meetings, service work, prayer and meditation, and work with others.
It's not always easy, but there's a payoff if we have the desire to stay clean and sober.