hi..thanks for your query.
U might have an episode of Urticaria
, so for now i think only oral anti histaminic tablets may be sufficient. would be wise to see if these recur .If so, you might need a prolonged course of anti-histaminics for sometime.YOU can apply a soothing calamine
lotion twice a day .Topical steroids
may be required if eruptions are persistent.
You also need to see if bed bugs are actually present as you suspect and get an appropriate pest control service to eradicate them if so.
Hope this help.take care!