I had lipoma removal surgery from my forehead and scalp. The pain after surgery was almost unbearable. Is this common?

Thank you for sharing your question and I am sorry to hear of your painful symptoms after lipoma removal.  It sounds as if you may have an entrapped nerve in/around your surgical site.  I would recommend following up with your surgeon in order to have the best advice rendered.

There are several possibilities.  One is that it is not a lipoma but a vascular mass.  Another is that you bleed more from taking aspirin or other blood thinning drugs.

Thank you for sharing your question.  Unfortunately the photographs supplied offer limited views of your tissues and I would address your bleeding concerns with your surgeon so as to get the best advice.  

There are some people that are prone to growing multiple lipomas.  It seems when you remove some other pop up elsewhere.  We have no idea why but the only approach is to remove the ones that bother you while they are still small.

Lipomas are benign fatty tumors that occur under the skin and less commonly within the muscle. They are associated with mild discomfort and a lump underneath the skin. It is always best to talk to an expert plastic surgeon to determine whether the lipoma is possibly a cyst or a tumor or hernia....

Thank you for sharing your excellent question.  Although swelling and bruising may be possible it warrants an evaluation by your surgeon to ensure your healing is progressing well.  Assuming both issues have steadily been improving over the last 4 weeks then all is likely okay. Hope this helps.