38-yr-old "Athena" here. Down to about 227 from 275 last August (go me!) after embarking on a supervised total lifestyle-oriented weight loss program, and a couple days ago, after nearly 6 months of oggling and drooling about getting a bike, I finally brought home my '14 Specialized Dolce Elite Compact. Huzzah! I was originally going to get a hybrid, as I suspected a more upright stance would be easier to ride and would be better for my bad lower back, but my test rides on the flat bars left me with super-sore sit bones. The balance on the road bikes seemed to take a little of the pressure off, and it didn't seem to exacerbate my lower back pain at all (got a little stretched, but felt remarkably better the next day).
I've only done 2 short rides (first one 0.8 miles, 2nd one 1.8 miles, according to Strava), and while I feel like I could have plowed through more mileage between my legs and lungs, my ischial tuberousities were so, so tender. It's really discouraging. I spoke with the bike shop guy about it a little when I was buying the bike and he suggested I keep the stock saddle for a bit, and that I might work into it. And of course I still need to schedule my formal bike fitting. But is it bad, bad news if I can't even ride for 2 miles without being in a lot of pain? I would understand if I felt pain after a half hour or so, but it's basically uncomfortable from the very get-go and it swiftly (within 10 minutes) becomes intolerable.
If anyone has any experience with suffering through the sit bone issue in such brief rides? Do I need to relax and give it more time? Should I just expect to have this severe pain and a bruised behind until I toughen up a bit? Or are there prophylactic measures I should take NOW to make it better? Also, because I'm so new to cycling, I'm a little lost about the whole bike fit process. I'm not really sure what to expect. Thanks for any help you can offer!! And I'm excited to be on the boards, formally! (Been lurking as a guest for a bit)