What to do...

Sophie is such a sweet baby, I love her so dearly. I am at a loss of what to do to help her and am exhausted. The last few weeks it has been getting worse and worse and I just don't know what to do. Some days we can go with just one or two episodes, some days it's the good majority of the day, she just cries and cries, not just like little whimpers, but outright purple in the face screaming. During these 'episodes' she won't eat, won't take a binky, doesn't like her swing, doesn't let me sit down.. so far I don't know what to do to help her! We took her to the doctor yesterday for a general checkup to see if they could see some reason she would be so fussy(i.e. ear infection, throat, uti, etc..) but nothing. They said she looks completely healthy. For the most part, yesterday was a pretty good day though, we only had one bit of fussiness from her and it wasn't the all out screaming, just normal baby fussy that lasted about 10 minutes. Also, two or three days ago she found her thumb, and since then that has been the only thing to console her when she is in these big fits.. and I can't 'help' her find her thumb.. she has to do it. I know thumb sucking is 'frowned upon' by many because it is a bad habit for a child to start, but if for now it will console her and make her feel better then I'm not gonna pull it away from her. So anyway.. I got some pics of her recently with her thumb in her mouth. Kinda cute.. I love her so much, I hope she feels better soon.

I can't upload the pic for some reason... weird!