I’m a tough old bird and usually nothing bothers me. But like you, this brought me to tears!! I didn’t have breast cancer but an aggressive blood cancer so I think our chemo regimen is a little different.
But anyway, I had Nulastin 4 different times. The first, I was actually in the hospital with a neutropenic fever on tons of antibiotics. I woke up from a nap and my lower back started aching, almost like I was getting a really awful period. Well, those days sailed decades ago! LOL. So I toughed it out, trying to move in the bed, thinking it might be the hospital mattress. Finally it just was so gripping and excruciating. I had no idea what it was!

I rang for my favorite chemo nurse. The advantage of being in the hospital! She knew I’d had my shot a few days before and fixed me up with a morphine injection and then brought me Claritin. That stuff works like nothing else! The Claritin, I mean. The morphine just made me sleep.

The next two months, I was ready with the Claritin and no issues whatsoever. My oncologist/hematologist said there was no problem taking it and I think the dose on the box is every 24 hours? Amazing stuff

The 4th shot, I took the antihistamine several days in a row and thought I was over the hump. Woke up in the middle of the night with excruciating lower back, pelvis, legs.
I’d had liver and kidney involvement from chemo, so taking Tylenol was out and so was any Advil. It was 2 AM and no way I was rushing to the hospital cancer ward for Morphine, though I wanted to! 😂. Finally the Claritin kicked in and the crises was over.

Any time you get a fever above 100.2 you should let your oncologist know. While you’re on chemo treatments, all of your blood levels of red/white and platelet cells will drop. Your white blood cells are the infection fighters and so you’re more prone to infection right now. The inflammation from the bone pain as the white cells are increasing, maybe make you a little feverish but it if climbs it’s best to call to get guidance.

When’s your next chemo?