Hi, mum of a now 9 month old refluxer here. Sounds like reflux to me (not colic, that's different). My DS started with silent and moved on to normal vomitty reflux further down the line. Symptoms for us were his inability to settle at all on his back, wind, a hoarse cry, looking and sounding in pain, bunged up nose, grunting/groaning. I had a hell of a time getting a diagnosis and scoured the Internet for information. It was hell. So I'll give you the best advice I got which was to see a private gastro paed, if you have the means pay for a consultation, if you aren't covered with private healthcare. Failing that insist your GP refers you to an Nhs gastro paed.
Things that also helped us:
Co-sleep, baby upright on you
Tummy sleeping (with use of an angelcare movement sensor pad)
Raise cot high at one end - try soacebabies risers
Use a foam wedge for playmat time (little refluxers sell them)
Change formula for an anti reflux formula eg Aptamil, or add Carobel (a thickener) to your usual formula. You should also watch for signs of dairy intolerance as that can cause of exacerbate reflux - we are on neocate for this very reason
Don't use too many things like infacol, gripe water etc, they are probably not helping much. Baby massage for wind and constipation works as well as anything!
Omeprazole - my DS was prescribed this at 10w, it made a huge difference, it totally took the reflux pain away. He was on it until around 6 weeks ago.
Use a sling around the house so you can get stuff done and don't feel overwhelmed with your miserable baby. My DS loved the sling!
Buy as upright as possible bouncer, we had a cheap bright starts one which worked a treat!
Be kind to yourself!
I felt like this would never go and worried so much, I hated seeing my baby so distressed but as I read many times myself it does get easier and they do grow out of it. We were able to get him off of omeprazole recently and he started crawling and standing a few weeks ago, we seem to have really turned a corner with the committing now too, fingers crossed!
Good luck and I hope this has helped somewhat!