Welcome to HCM.
You have not mentioned the reason you had to do Ultra Sound
Scan and your age. Your result is perfectly alright and you have nothing to worry about.
Renal cortical cysts are incidental findings on US and have no significance, unless they are of rapid growing type.
Heteroechoic(inhomogeneous)cyst and haemorrhagic cyst, I think are referring to the same cyst. Haemorrhage in the corpus luteal cyst
is occasionally seen after ovulation and it subsides of it's own within 3 months and does not require any treatment.
It could of course be Chocolate (endometriotic) cyst, in which case it can cause pain during menstruation
, and it needs treatment.