Pack & Play Mishap

I am up in Driggs this weekend with my boys and brought my pack-n-play for Charlie to sleep in. Last night Charlie cried and cried and I couldn't figure out what he needed. He was honestly hysterical (he would sleep for 20 minutes and then cry for 15) so finally at 1:30am I brought him into bed with me and he ended up clinging to me all night. Then today, I put him down for his morning nap and again he was totally hysterical but I let him cry it out and because he was so tired it didn't take long. Still his sleep was restless and he kept waking up in tears. Then the same thing happened during his afternoon nap. So tonight I decided to put him in the crib (it is an old rickety thing that my parents bought at a garage sale before I was born and used for all seven of their kids) and he went right to sleep, no tears, and has been sleeping soundly since. I didn't know that a baby who isn't even ten months old could be scared of something or have such a strong opinion. I feel really bad that I kept putting him back in that bed which he so obviously hated. Poor kid and poor me...I am exhausted and had to sleep with a 25lb baby laying on top of me all night.