PET Scan delayed

Had a minor setback this last treatment.  For whatever reason, my red blood count decided to crash and put me in a severe anemic state.  I was doing well the day of treatment and the day after.  We went to dinner with friends and I started to get chilled.  Hot tea didn't help warm me up, all I wanted was to go home and take a hot shower.  The next morning I couldn't get out of bed, lift my head off the pillow, move .....DAMN!!   I stayed in bed fading in and out the majority of the day and evening.  The next morning I had an appointment with the DR.  Needless to say, he was quite shocked to see me laying on the table with my sweatshirt on and a blanket covering me.   He said I was severely dehydrated and my iron was extremely low...hence me being so cold and tired.  He wanted me to have iron treatments, but they have made me so sick in the past I said ,"NO" and meant it!  I did have hydration thou I'm not sure it helped any.  Came home and crawled back into bed where I stayed until this morning.  Starting to feel somewhat better, still very tired and everything I do seems like it's taking forever.  He postponed the PET Scan for this month, wants me to have another round of chemo and then will schedule it.  Also going to cut my nulasta shot in 1/2 as he feels that could have something to do with me feeling so bad.  So, we'll just take it another month at a time and see where this ends up.  Thanks for all your kind words, prayers and cards sent.
                                                   Peace  & Love,
                                                                            Marcia