At my wits ends with the hospital, has anyone ever experienced anything similar to this?
On Saturday my 5 week old daughter was reaaaaally unsettled (totally out of character she hardly ever cries) and very congested - went for hours screaming which caused her to gurgle and often choke on phlegm, this went on for about 8 hours and at one point there was a tiny amount of blood in her phlegm but it didn’t really concern me as it was so tiny and she seemed back to herself by evening. Sunday daytime started to happen again and she coughed up phlegm mixed with a lot of bright red blood - took her straight to A&E to which doc said it was probably a nosebleed that went down the wrong hole. Felt slightly fobbed odd but trusted the doctors instinct. Monday perfectly fine back to her normal self happy and awake all day, Monday night all hell broke loose non stop screaming from about 2am-5am choking on what seems to be phlegm stuck in her throat and gurgling/rattling as she cried. Started to cough up a fair amount of blood again around 5:30 and upon turning lights on I noticed a massive (what seemed like fluid filled) lump had formed on the side of her head. Took her straight to A&E who had no answers, noted how strange the lump was and admitted us onto ward. Morning Doc absolutely useless decided I must have cracked nipples which caused the blood in her spit up (I don’t - later confirmed by a nurse, I also express and would have noticed blood in my milk but doc didn’t want to hear it) changed over to evening Doctor who has been brill so far but still no answers, lump has no gone down significantly but still no explanation as to what it was - was squishy to touch- bloods came back and they ^^think she has some sort of infection but don’t know where or what is causing it so put her on broad spectrum antibiotics, decided to do chest X-Ray and initially said head X-ray too but then decided it’s too risky at this stage as the radiation could affect her small babies brain. Mentioned CT scan but again didn’t want to risk the radiation, also mentioned lumbar puncture but then changed mind again. She’s been very lethargic all day to the point I got really worried but she has woken up slightly since (before antibiotics) Has absolutely anyone experienced anything like this?? Even just coughing up blood? Docs can’t seem to come up with an explanation or reason for either problem and I have such a bad feeling if she starts looking well they will just send us home without any diagnosis, any help or advice is appreciated!! 

(also no poo in around 2 days then did green poo earlier)