Ah mama, kung bumukas ang tahi mo, kailangan mo talaga makita ng doctor or go to the nearest clinic/hospital para ma-check nang maayos, hindi 'yan dapat i-handle lang sa bahay, lalo na kung may signs ng infection or bleeding pa.
A few of us mums have had similar scares, and ang sayang lang talaga kung hindi properly assessed kasi baka mas complicated pa. The doctor will know kung kailangan i-reopen and restitch ulit or kung okay lang siya na i-monitor. Don't worry, maraming tao ang nakahandle nito, just don't delay, ha? Keep the area clean in the meantime, pero please go in ASAP.