Good evening. Ladies, could anyone have encountered such a problem as …

Good evening. Ladies, could anyone have encountered such a problem as I? The essence is this: gave birth on January 16th, planned CS was scheduled. There were no problems until yesterday. It hurts at the internal seam when touched, and there's redness and slight swelling under the seam on the forehead. In paid clinic by appointment for the nearest time only March, and the maternity hospital where I gave birth will accept only on Monday. What should I do and what could it be, light yellow discharge, blood and sebum is absent.