hormonal issues- women's help/advice?

Okay so I admittedly do not go to a general physician often, I know that is not good and should get a check up every year at least, it has been 6 years since I have been to any doctor besides a GYNOB. I believe I may be having some sort of hormonal issue and would like other women's help/advice or opinions on the matter. First off I had a child about 7 months ago and I am currently breast feeding. I started having normal cycles about 3 months after he was born but I have had extreme PMS. about 2 weeks before I get extreme moods swings- zero patience, I feel like a crazy person andhave extreme food cravings aweek before. My face breaks out as well. I get bloated before I even get my period but I am eating very healthy. More recently for the last 6 weeks my hair has been extremely oily.My face is not oily. This is very odd for me, I never had oily hair as a teen, I would get a few pimples the week before my cycle but not like this. I do not feel stressed out until I get mood swings the 2 weeks before. I am not as emotional the week of my period but I am still bloated and very tired. The only time I feel at all like my normal self is the week after my period and then I get crazy all over again. So basically 7 days out of a month I feel normal. What should I do? I am 27, eating a healthy diet, exercise a good bit, not taking BC.