Does this mean I'm getting better?

Every since I got my first period @ 12 years old I have had problems with it. It has never been on a normal cycle. Doctors first told my mom it would take a few cycles to get on a monthly bases but it never did. It got more sparse as time went by. At first skipping 2 or 3 months then it to 4-5 months and at one point I only got my period once a year. I went to a doctor who told me I had no problems but that the lining in the uterus wasn't getting thick enough to actually come down (TMI Im sorry). Another told me I wasn't ovulating and the last told me I had PCOS. He suggested I lose some weight and it should get on a monthly cycle. I lost 30lbs earlier this year and it has begun coming almost every month. Not yet on a predictable cycle but I do get it with no more than a one month lapse every now and then. Does this mean it's getting better? (I have no been using Metformin which is what my gyn prescribed mainly because I lost my job and health insurance) I also noticed that before my period would come without any symptoms and only last 2 days, now it lasts about 5-7days and comes accompanied by sore , cramps, moodiness and a general feeling of being tired, is this also normal?