Thank you all for the info & encouragement. On the train now to SJPP. I did pad it & tape it. I will skip the mountain & start in Roncevalles as suggested, as even here On train it is swollen with pain in both lower calves & lower back from limping about. I walked about 4 mi yesterday to try & shake it off . Probably not the best idea I had. Feels better in flip flops with nothing touching it. I'd almost rather go barefoot than put those boots back on. Lol If it gets worse before getting better I'll see the doc.
As soon as you get to Pamplona, go to the El Corte Ingles department store near the bus station. Invest in a pair of hiking sandals that provide better support for your feet, but do not contact the hurt part. There are other shops that sell hiking shoes and boots. They may sell hiking sandals too. But, you are at the season change. It may take some shopping to find what you need and what fits well.
You are doing everything correctly. Good on you! The others have all provided useful advice so I will not pile onto the scrum. Here are my added value comments (I hope)...
NEVER GIVE UP! That said do remember that
"there are days to be brave and days to be smart." You are doing fine so far. KEEP IT UP!
Also consider that, if you start out walking, then your foot tells you to stop, LISTEN TO YOUR TOE! Walk only to the next cafe and STOP! Ask them to call a taxi to take you the remaining "X" km to your planned night's lodging. Plan on about one euro per kilometer and round up to the next euro or so. Tipping, per se, is not part of the culture.
This is NOT cheating! "Back in the day," if a medieval farmer came along in his wagon loaded with hay, and offered you, a medieval pilgrim, a ride to the next village, would you accept it? Of course you would. Just do it and relax.
The only time and place this (leap-frogging) is an issue is on the final 100 kilometers, from just after Sarria(Morgade to be exact) to Santiago. You MUST walk the FINAL 100 km of any route to be eligible to receive the Compostela. The staff there DO check that you have two stamps a day after Sarria, and they are familiar with EVERY known stamp.
I hope this helps.