I have a 2 1/2 week old and she screams every night from 6pm on.  During the day she fusses A LOT too but not as bad as evening.  She has been having watery/diarrhea poop for 2 weeks now as well but the Doctor is not concerned because she's peeing.  I have started giving her gas drops and it seems to help a little bit but nothing consoles her at night.  She is formula fed and drinking Similac Advanced.  My doctor brushes everything off as "normal," but she is not with her while she screams incessantly every single night from 6pm - 10ish or longer.   Do you think she may just be a colicky baby or would switching formula maybe make a difference?  I'm a FTM and looking for any possible advice at this point...