a little confused...

My period last month started a week late.. had 2 days of spotting/nothing, 2 days of light bleeding and then 2 days of spotting/nothing... 
this month my period was a week late., started Saturday night and finished now.. basically 3-4 days... 
my normal period lasts for usually a week with heavy bleeding.. what's going on?? My periods were sort of regular but now seem like they're not?  We're trying to concieve with no luck so far.... my cervix is continually high and really soft too?  😪 any ideas?