hormone question

normally i have a 29 day cycle, always have and i normally had 6-7day periods. virtually no pms symptoms except for tender breasts. in that time ive had 8 pregnancies,4 which sadly ended in mc. im now 35 and ttc at least one baby once again. been ttc since nov 2014.....nothing :( and in this time my period has shortened to 5 days and my pms was horrible! moody, mean, emotional, extremly hungry, acne, urinary incontinence You name it! Then this month.......none of that! Its like my younger yrs again! like its a miracle and my periods gonna go beyond the 5 day mark, i can feel it. Does it sound possible that since nov 2014 my hormones were out of whack and maybe now theyre going back to normal?