Hi,firstly about your symptoms,1) After 6 weeks of caesarean section, it is ok to have a littie vaginal bleeding but a bad smell associated with it is indicative of infection in the genital tract.2) There may be a liitle stretching feeling or discomfort in the stitchline but it should not be debilitating or requiring pain killers for relief. 3) Fluid collection under the stitchline usually resolves on its own. However, it is likely to be infected if the lump is red, hot and painful to touch. I suggest you maintain a temperature chart with six hourly temperature readings and if any two readings are above 100'F you should consult your gynaec for investigations followed by appropriate antibiotic course. Best wishes.