Oo, normal lang yan mama, nakakasakit talaga ang tahi pag umuubo kasi gumagalaw lahat ng muscles doon, pero iwasan mo ang pagpigil ng ubo kasi mas magiging mahaba ang healing at pwedeng mag-infect! Alam ko ang takot mo, pero a few of us na may tahi experience the same thing, at nag-try kami ng soft coughing o pag-support ng area na may tahi using a pillow habang umuubo para less pressure, it really helps reduce the pain. Since you're worried and the pain is affecting what you're doing, best to check with your doctor just to make sure everything's healing okay, basta alam nila kung ilan na ang days mo from the procedure. Yan lang mama, kaya mo yan!