I have stamping in November. I am FTE and worked for this company since 1 year both on OPT and H1B. Before joining this company, I have worked as a consultant on OPT. I was paid regularly except for the period of training and bench, which was around 2 months. Should that cause any problem for my stamping? Or should I mention my start date as the date I started my project in DS-160? Also I did some unpaid internships while on OPT. Should they be mentioned as previous work experiences? If mentioned, will they cause any problems.