Masturbating on the outer part of the vagina, the upper lips do not cause nerve damage or break the hymen. Masturbation is a normal and safe activity that does not interfere with your marriage or fertility. The body naturally heals itself, so any leftovers from old habits should not be a concern for you now. 

Obesity and smoking are among the leading causes of infertility. It is advisable that you should see a gynecologist or an obstetrician to know how you can continue with your pregnancy plans, and also ask for advice on weight management

You should continue taking the prescribed medication and do not miss any doses. Maintain a healthy diet and exercise routine. If the problem persists, please visit your gynecologist again

It’s fine if your period is late after taking Plan B because it messes with your cycle. Some symptoms like spotting, feeling sick, or changes in the timing of your menstrual cycle are pretty normal too. Remember that stress may also cause a delay in your period so try not to worry too much about it. Everything should return to normal soon enough.  If not though, then maybe think about getting a pregnancy test.