Thanks for your query,
You have not mentioned your age which is most important here. Disturbed menstrual cycle and hot flushes may be related to near menopause
symptoms. If your age is less , then one possibility is cervical stenosis which may occur as a complication of cervical biopsy
. Cervical stenosis is characterised by amenorrhoea and pain.
For this you will have to attend a OBG.
Next is your rectal bleeding
. Are you sure it is rectal bleeding ? ( not vaginal bleeding?) If you are sure then it may be due to piles or fissure etc for which you would have to consult a general surgeon
Take care and best of luck..
Hope it helps...