Talk to Gynecologist on Periods After 21 Days And Heavy Bleeding

my cycle of period is 30 days bt from couple of months it is exceeded to 3 to 5 days. last month i got my period on 15 of nov and on the first its not started properly and 2nd whole day it is brownish blood. on third day it becomes red. my period duration is almost 7 days and from 4th to 5th day it starts spotng bt on this one it lasts with bleeding and i end up on 11th day. and right after the next day i have pain of ovulation which i commonly felt on the 16th day of my period date. and now after that pain i have periods after 10 days of that pain and this tym i have period cycle of 21 days. is it ok also i have too much pain of these last tym i have minor pain but this tym i have too much from yesterday. is it ok or there is any problem. also i am trying to conceive bcz i ve no baby and there have been 9 years to complete of my married life. kindly response to my problem