Weakness and improper bowel movement.

Hello Doctors, I'm having gas issues like excessive bloating and burping and acidity as well since few months now. I was on prescription in the month of February, the prescriptions were pantoprazole. It did got better once the course was done, but from last few days, I'm feeling weak and I feel like my bowel movement doesn't gets empty completely. And the consistency of the stools are not consistent, sometimes it would drown or float and be in like mushy texture. If it get's completely empty then I start feeling weak and feels like my stomach is kind of empty sack and it pulls me down. And at last does gastric issue have any connections with the eye sight? Like from past few days i feel like my eyesight is getting weak, like after riding my sight feels like dark around the retina. I feel like need to focus more to look clearly, and it comes and goes. It's nit persistent feeling. Please help me with the queries. Thanks.