Sorry to hear about your rough start, I hope you have a good recovery. Make sure to see a doctor to discuss the future options.
As far as the PFO is concerned, you really don't have enough dives to jump to any conclusions. There are divers doing thousands of big dives before they find out they have a PFO.
I don't mean to minimize the effort, but there are plenty of people who do 4 dives a day, 6 days a week for months at a time. As a full time instructor, that kinda is part of the job. Since you mentioned it's your ambition to turn diving in a career, that is something to consider. Purely the diving itself might have been too much for you at that time (I assume it's your first full week of diving, so that in itself is a new experience), but let's not forget there were quite a few extra things stacked against you (purely based on your earlier posts, obviously I don't know you personally so some of this might not be applicable to you):
- you mentioned this was a real defining moment for you, packing up everything and going is brave and adventerous, but can also introduce quite a bit of stress. maybe you lost some sleep over it. Both (subcontious) stress and lack of sleep can increase your suseptibility to DCS
- you moved to Florida right? I have never been there, but I understand it's hot and humid. A change in climate can seriously dehydrate you before you even know it. Dehydration is a massive DCS risk factor, especially if you dive full time.
- you drove over and got started. it didn't sound like you had a few days to recover from driving long distance. Fatigue is yet another risk factor. And after a long drive, how were your muscles? Any stiffnes, pains etc? all risk factors...
There might have been more factors, all summed up as doing too much, too soon.
The point of all this? DCS is a nasty beast. There is no way to tell who and when DCS hits, even if you are doing everything by the book. Talk to your doc about your recovery, and take it slower in the future keeping all risk factors low and slowly work on experience.