Period changes after MC?

Regina
Has anyone else noticed this? I miscarried in July, had a three-week long miscarriage, then a 2-week break, then started my next period.                                                             
The last few cycles have been bizarre. I have radically different PMS symptoms - lots of gas and bloating and, this cycle in particular, I was nauseated for *an entire week* before AF. Has never happened in my 20+ years of menstruating.                         
                    
I've also noticed that my periods are way heavier in the first day or so and then slow down dramatically by day 3. I'm used to having 5-7 day periods. The last two periods also started with brown spotting before switching over to a normal bleed.      
Has anyone had this experience of your period and PMS symptoms going haywire after MC?