Yes, this is completely normal. What you are experiencing is likely colostrum, the early milk your breasts produce to prepare for breastfeeding. It is very common for this to start leaking during the second trimester, around 22 weeks. You do not need any medication to treat or stop this. To manage the leakage comfortably, you can place soft, disposable or washable nursing pads inside a supportive bra to absorb the fluid. Avoid squeezing or stimulating your nipples, as this can cause more leaking. If you notice the discharge becomes bloody, foul-smelling, or is accompanied by breast pain, please consult your doctor.