Hi all.
I've been off my road bike for at least 12 years. When I was in my mid 20s and svelte it fit perfectly, now somehow my center have gravity has shifted toward the belly a little (considerably) and something must be done.

I've done a couple short <15 mi rides and at first I felt like way too much of my weight was on my bars. To try to correct I dropped my seat a little and slid it forward a little. I feel like my weight is distributed a little better, but 2/3 into my ride tonight my back really started bothering me. I don't really know where to go from here. Shorter stem? Seat down and forward more?

Any suggestions would be really appreciated.