DS is 8 weeks old and formula fed C&G.
He has always suffered from wind, lots of it, hard to shift. We tried infacol in the early days but it seemed to stop him pooing so then he was uncomfortable because of that so we stopped it and just tried better winding techniques.
The main issue is at the bedtime feed (around 7-8pm) he cries really badly after about two sucks of his bottle. Full on screaming, back arching. He is hungry and you can hear the hunger in his cry but everytime he sucks he screams. I end up spending over an hour calming him down and he will finally take about 3oz fighting and the final 3oz calmly.
He absolutely will not lay on his back whatsoever. He sleeps on his front (don't flame me, we have a breathing monitor), he will only sleep on his belly or up on a shoulder, never in an arm cradle position. When he was newborn and we laid him to sleep on his back he would stay asleep but would grunt terribly. Really noisy grunting and straining. As he has gotten a little older, he just wakes up if laid on his back so we automatically lay him on his front and his grunting stops if he's on his front.
He has had a cough for about 4 weeks now and was originally given ABs for suspected chest infection as he had a cold at the time. But the cold and the chest wheeze has long gone but he still has a cough. Hard to know if this is the remnants of the cold though? 
Does this sound like reflux? Or just a fussy baby? Will he just grow out of it? Worth a trip to GP? My HV is useless.
TIA