I feel for you, I really really do!! I have had a few kids who scream cried but the absolute worst was a little boy who did this CONSTANTLY for exactly 2 weeks (10 days in my case). Magically, (and I'm sure after getting used to our routine here) he stopped and came into daycare on the third Monday and waved goodbye to dad and was the easiest child EVER after that!! I am so glad I stuck it through because he seriously was the best child I have ever had in my hdc. (looking back, he also had a broken arm during his first month of coming here and I can't remember how much of that overlapped with his first two weeks. I want to say it did for at least a week, maybe the full two?)

Things I did were....when it got to that scream cry where it sounded like he may throw up he instantly was placed in his playpen and told a very firm "enough. when you are done you can come out"...I would get on the floor with him and play near him. If he was behaving nicely he got to sit on my lap for a bit but the second he started to cry off he went. He cried through art, outside, lunch, circle, nap, etc. It was horrible!! I am not a huge drinker but I drank bottles of wine through that 2 weeks and felt like crying myself a few times. It is very hard to listen to a child cry and not know what to do to stop it. His parents knew a previous dcmom I had dealt with in a dccentre and I know they wanted it to work because they trusted the other mom's opinion of me and they didn't want to find another dc. I had never terminated before this and didn't feel like I wanted them to be the first so I powered through it and in the end it turned out. HOWEVER, I don't think I would have been able to do it had it lasted much longer. I think a month would be my absolute longest and I would need to see improvement in that month.

Just as we don't like certain adults, children don't like certain dc's and that's okay!!! If you feel that you can not do this anymore than I would just tell the parents what youre thinking and give them a deadline. It sounds like they are really working with you so I would want to do my best but I also have to think of the others kids in my care and my own well being. Crying like that stresses me out big time and I can't handle it.

Good luck!!