Ask an Immigration Solicitor. Get an Answer ASAP.
Hi, I will need full facts before advising you on your matter:
When did you first enter the UK?
Did you have any gaps between your visas?
Unfortunately you will not be able to apply for Indefinite Leave to Remain in the vases of long residence because you left the UK for more than 6 months in 2013.
Just to confirm did you leave the UK for more than 6months during this whole period of time?