I would also like to add, nakakatakot nga kasi siguro umuungol ang grandfather mo because he's in severe pain dahil punung-puno na ang pantog nya at di nya malabas. Unless he has a heart condition, you really don't need to panic. Even if you reach the ER 30 minutes later than you did this morning, you'd be in the same situation: he's still in pain. It's really not like he's in a life or death situation where every second counts. But I totally understand the situation you were in this morning.
I would venture to guess that your grandfather has a prostate problem right? Either a prostatic hypertrophy or (heaven forbid) prostate CA. What the emergency doctor did was to insert a foley catheter to slowly decompress your grandfather's bladder but just a little at a time. Bawas ng konting ihi ngayon tapos a few more after a few hours... pag masyadong mabilis din ang pagtanggal ng ihi he could develop a hemorrhagic cystitis, where his bladder would bleed dahil masyadong mabilis na-deflate.
Oh, and I would also like to suggest you get one of those Lifeline Arrows service or something. My parents have those. In an emergency, we would just call their hotline and an emergency crew would be there in a few minutes; and we can even request them to transport the patient/s to any hospital we'd prefer. They could do the foley catheter insertion in cases like yours then transfer the patient to the hospital after. At least your grandfather wouldn't have had to suffer while en route.