Welcome to HCM,
Firstly if toy got period then go for the treatment to regularize the period.
After 2-3 months course your period will become normal and then go for ovulation study and accordingkly you follow the instruction given by your Obst.
It is also possible that during this period you may not get period.
if it is irregular then it may be due to psychological shock
followed by sad demise of your beloved.
Ok and bye.