I Think I Am In Perimenopause. I Am 47 And

I think I am in perimenopause. I am 47 and I went to my Ob in Dec because I was noticing weight gain especially in the abdomen. I had also had irregular periods (missing them and some abnormal discharge when I had my period -- my tampon would sometimes be saturated with water (not urine). They did an internal ultrasound and things were fine. But now I am a little worried. I got my period around was in November and then didn't get it again until April 4th. Now the bleeding is very heavy and it has been ten days (it is staring to subside) but this is very unusual (I normally only have it for 3-4 days and not very heavy). In addition, I feel like my stomach is really bloated. If it helps I am about 5'6' and 134 lbs (with the recent weight gain).