Chemo, round 4, very tough morning - need reassurance

[Erin]

Hello Ladies,
I need a little advice this morning. This is day 6 after my 4th round and while I felt like sh*t yesterday, it was manageable. Today I feel as if I am dying. First thing this am I was barely able to get out of bed to the bathroom without passing out. I was diizzy, and so weak I could not stand. Couldn't make it down the stairs by myself. I am a bit better now, I can get from one place to another slowly, and don't feel in any immediate danger of passing out. But this is freaking me out. It this "normal" for chemo, or something to worry about? My RBC and WBC were low prior to the last round so I am sure they are really low now. When do you just tough it out and when do you worry something is really wrong?? ....well, something wrong beside BC! I do have a call in to my onc, but have not heard back from him yet. Any advice?