Marrow Donation Shot #2

So last night I started hurting. Around 4:45pm, my lower back started killing me. I called Mattie, the donor recruiter. She told me to take Tylenol. It's helping. Kind of. This morning I went for Shot #2. Had to wait for a while. I felt a little tired and sluggish so I decided to fore go my run and get on the bike trainer instead. It was about to rain too (it never did). I had very little energy, but I got through 45 minutes on the bike. Not long after, I started to ache all over. (It's 430pm) I'm still achy. My bones hurt.