I just wanna know she'll be ok ☹️

My LO is just about 6 weeks old and my mother instincts makes me believe something is wrong! So about 2 weeks ago I noticed my baby being really fussy and crying a lot so I took her to the doctors and we switched milk from enfamil new born to gentlease. It made her fart more and poop smell a lot lol. She's still fussy and crying like something is hurting. It's a loud cry different from the normal. It can happen either day or night no specific time nothing will calm her down!!! . I've tried every colic drops last couple days but still the same. I did notice sleep patterns change she fall asleep and randomly get up even min after and be wide awake. She'll do that until she is really tired. Sometimes makes weezing sound also congestion sound too! She does spit up but nothing I would worry about. She also can eat up to 4oz one feeding and the next not even a full oz. shes been eating less then normal. I also noticed she has a rash too! Like little pimples? And her ear is rough feeling? Mind you the dr said it's normal! I don't think it is. She's also been playing with her tongue a lot? Sometimes she also doesn't take the bottle right away? Which up to 2weeks after birth didn't have that issues! I've switched bottles 3 times! She has been acting as if she's going to throw up but doesn't? She wets her diapers and has poops normally? She does get hiccups a lot too? I'm going crazy thinking something is seriously wrong with her! And everyone is telling me it's colic! Do colic babies really do all that? It's rare she's up and calm and just interacting with us before she gets fussy. I'm literally in tears in fear! Call me crazy for. Wing that scared but I've had 2 miscarriages before her and I cherish her more than anything in this world I added some photos since the milk change and her rash ☹️😩

M