I realize that most people either have a light or no period at all on this bc. however for the first 3 months i took loestrine my period was pretty much all over the map. one month is was 4 days the next 7. This is my fourth month and this time around the 3rd sugar pill my period began and lasted maybe 1.5 - 2 days.

Should i be worried or do you guys think my body is finally adjusting to the pill?

Takes 3 months for your body to adjust. Some people can take up to 6 months. It's not set in stone that you stop having a period but it can happen. It's for making them last less than a period you would normally have.
Since your last one was 1 1/2 - 2 days I'd say you are adjusted.