Drainage, light massage and terrible itching -- could this be a blood clot?

I am 4 days post-op from TT and flank lipo. Is it ok to lightly massage the lipo/flank area? My entire abdomen itches but more so in the flank area. It is making me crazy! Is there anything I can do? Benadryl, lotion? If a patient had 2 drains, one putting out a lot and the other putting out very little and the putting out a lot was accidently pulled out, would it be more typical to put it back in or go without? If left out would that increase the chance of swelling or a possible blood clot? Thank you!