Sleep regression?

Someone please help me. It’s getting so bad where I can’t take care of him anymore. My son was a colicky mewborn , has very bad acid reflux and just got diagnosed with a milk allergy. Now I’m thinking I need to take him to a sleep specialist. He has never slept good at all now recently when I say he’s not sleeping at all I mean it. Not one lick of sleep maybe 10 minutes then he’s up screaming bloody murder. He’s started rolling over so now he’s not even in his swaddle to keep him a little relaxed he’s constantly rolling moving and waking himself up and not going back to sleep. At this point I have no idea what to do it’s hindering my

Will to be a mom , sadly. I can’t do anything but cry my mental health is at a scary place and I really need some advice or someone to tell me it gets better. He is

4 months so it could be a sleep regression but is it it really that bad?