Leakage on Scars 3 Weeks After Surgery, is This Normal?

   The redness coupled with the possible fluid collection suggests an infection.  Although antibiotics are needed, anuy fluid collection should be drained.

At 3 weeks, your incision should be healed. Leakage and inflammation around the wound implies an infection, and taking antibiotics is a good first step. However, I would not rely on antibiotics alone to solve the problem with the leakage. Leakage means that there is an opening somewhere along your incision. If not treated appropriately, this opening can become larger, potentially exposing your implant. It is important to find a local plastic surgeon to examine and treat you now, rather than waiting 3 weeks for your surgeon to show up in the UK and hoping for the best.

Thanks for your question. Good Luck!

I would be very concerned about an infection.  If the infection is just in the skin the antibiotics may work, if it is deeper it may involve the implant.    See your surgeon ASAP