Be gentle on yourself @Karma03 ... and keep a diary on any side effects you feel. As @Afraser said .. not everyone gets all the side effects - some get none!
Sorry to hear you were so crook during chemo! Definitely No fun in isolation.
Any AIs that we take are to reduce the chance of recurrence, so your Onc should have given you the percentages re the benefits of taking them. My own percentages were pretty low but I still chose to go with the AIs as “insurance”. And you CAN swap between the different AIs as well. I started on Letrozole and now on Arimidex.
take care, all the best xxx