Leech bites and possible infection

Hi everyone,
On Saturday we took a day trip to the Blue Mountains.
Between the wet weather and following the Grose River the leeches were out in force.
Despite gaiters I pulled about six of my lower legs.
Has anyone experienced infections from leech bite sites?
I have itchy lumps forming under the scabs where I removed the leech.
A cross between a pimple and a blister....
I have been bitten plenty of times in the past and never reacted this way.
Thanks
Grant
On Saturday we took a day trip to the Blue Mountains.
Between the wet weather and following the Grose River the leeches were out in force.
Despite gaiters I pulled about six of my lower legs.
Has anyone experienced infections from leech bite sites?
I have itchy lumps forming under the scabs where I removed the leech.
A cross between a pimple and a blister....
I have been bitten plenty of times in the past and never reacted this way.
Thanks
Grant