Obese 19 yr diabetic Guy starts out with phimocure rings

So, I just got the Phimocure kit by mail. So, I thought, "finally, I'll make some progress!". However, I was having trouble getting the rings in. I contacted Phimocure, and they told me to place the ring into the tight phimotic band. Except, I look at my foreskin, and it seems I don't have one, or not as prominent. So, do I continue to try? Maybe my foreskin is still too tight? 

I began to observe my foreskin some more, and I noticed(I marked with arrows/lines) it just doesn't look right. I'm going to schedule an appointment with a doctor, but for now, what's your thoughts on this? Is this just what phimosis does to a penis? Maybe I'm just exaggerating 

I believe I've also got yeast infection. I've began to to open my foreskin and allow to warm water during a shower to go in while doing a light stretch. By just doing that, I've noticed I can retract my foreskin a teeny little bit more. I see white stuff on my foreskin, which I believe is smegma. What else can I do to get rid of yeast? I have some hydrocortisone 1%. Will that help? If so, how do I apply it? To the glans? 

Also, it's important to note, I was told by a doctor(a while ago) I have(had, hopefully) 'pre diabetes', and I know the sugar in the urine is bad. I've changed my diet and I have lost 40 pounds. From 300 to 258. As you can see, I'm just trying to turn my life around. Cut my long greasy hair too. I'm 19 

Source: http://www.network54.com/Forum/244184/thread/1418272759/last-1418614685/I+bought+Phimocure%2C+and+I%27ve+few+questions+about+it+and+my+foreskin