Breast fat transfer - blood clot and drain? 3.5 weeks post op.

Breast fat transfer 3.5 weeks ago. Scar tissue from previous implants was released. On 1 side 1.5 weeks ago, I developed redness & hard skin, got antibiotics again & blood was aspirated twice. Pain became severe so yesterday, I got a surgical drain. I feel something that feels like a worm in the top half perimeter of breast. It feels disgusting. Is it coagulated blood? How will it go away? Should I ask my PS or another dr to remove the drain as soon as nothing drips for 24h, to lose less fat?