Stomach cramps and a lot of gas throughout day

I have been suffering with this for a few years, I never gone to the doctors about it but everyday nearly my stomach has cramps not severe pain but more of just a general uncomfortable feeling.. It is also accompanied by gas and the feeling of movement in my stomach which produces noise. I also get weird sounds coming up my gullet now and again. I can go to the toilet usually with no trouble, I get the urge after having a coffee in the morning (with no milk). 

I would say I get about roughly 6 hours sleep a night, I try not to eat before bed. I have also suffered with spots on my face for a long time.. Acne medication never seemed to help with them so now I am thinking if they are connected to my digestion?

Thanks in advance! 

Either try to eliminate coffee or try decaf and see what happens at least for a week. If nothing happens then either see a dietician or a doctor.

Thanks for the reply, I did previously try to cut out caffeine for about 3 weeks and didn't notice any difference but I think I will have to go to the doctor