I believe that what
@LizzyM means is that if you have one II before now, then that is an indication that your app has merit, because at least one SOM has issued an II. It doesn't mean that, for sure, you'll get more II's. You might...and you might not. The person with no II's by now is less likely to receive any II's because, at this point, no SOM has believed his app to be worthy of one.
That is my gut feel for what she meant. I could be totally wrong.
That said, you are a Calif applicant. And from your screenname should we assume that you're Asian? If so, you have a tougher road to hoe. How strong is your app? If you end up having to apply again, and your academics and MCAT are fine, then next time submit the first week of June so that you'll be complete likely by the end of June. You need to control as much as you can. And, in the meantime, work on any weaknesses in your medically-related ECs. What kind of volunteering have you done? If your resume is research-laden, but you have little to show in the area of volunteering, then you may be presenting yourself as someone w/o much "human touch".
You've applied to a lot of schools, but if your list doesn't include SOMs that are more likely going to interview you, then your list needs adjusting.
Did you mostly apply to top 30 SOMs?