Oo mama, yan talaga yung painful part ng healing especially pag walang stitches, parang ang sakit ng urine on raw tissue, totoo yan! One of my mum friends had the same with her second baby kasi mabilis ang delivery niya, at what really helped was frequent warm sitz baths (like 15-20 mins, few times a day) and making sure she's drinking tons of water para less concentrated ang urine, plus using a peri bottle to dilute while wiping. Pero mama, if it's been 10 days na and the pain is still intense parang may pwersa talaga, I'd really suggest checking in with your OB kasi baka may small tears or infection na hindi nakita, better safe than sorry, lalo na kang lactating pa siguro. Healing varies talaga especially without stitches, pero your doctor can make sure everything's okay down there.