Good Morning.i Have Question.i Take A Utragestan 200mg Soft Gel

Good morning.i have question.i take a utragestan 200mg soft gel yesterday because i am pregnant and i suffer spotting.but i take it 1pm yesterday and around 5pm i experience itchy in my shoulder several part of my 2hands and in back of head..is it cause of the medicine or because when im done eating palitaw with sesame seeds i experience itchy..