F1 Status after OPT Expires


My F1 OPT expires by April 2016 . My employer is sponsoring my H1 .I understand that I will be on Cap gap if my H1 gets picked in the lottery .If my H1 does not get through lottery , I am planning to do my Masters the course I want to study is only available in Fall (October ) . So my question here is from the time the lottery results are known say for instance from May to October , will I loose my F1 status ? Do I have to apply for new F1 again ?