@Blue Lion I totally agree with all the above mentioned advice, but my simplest advice to you would be to just be patient. A lot of people are still receiving II's and there's a very real chance you'll still get one and get accepted this cycle. I know that the waiting game is terrifying because life's literally on hold unless you have a decision, but constantly thinking about it will only make you more miserable, so try distracting yourself by doing things that you have fun doing.
And if you don't get in then get more feedback from the schools, and most importantly, if you plan to reapply, then apply EARLY and send frequent updates to schools that accept updates (letters of intent help too)! While October isn't exactly late in the cycle, I don't think it's early either. No matter what anyone says, applying early is very important since most schools accept students on a rolling basis... it will significantly increase your chances of getting in. Frequently updating your application is also very beneficial as it affirms the fact that you really care about the field and are constantly working to improve yourself. Pretty sure it'll also force the schools to look at your application more often. I'm sure you're probably already aware of all this but I just wanted to mention these little things that might help. Please feel free to correct me if I posted any misinformation as that was not my intention.