Working shifting

Is it normal na mabilis sumakit yung balakang ko o binabalakang? 19 weeks and 3 days pregnant. Then last check up ko sa lying in, 80/60 blood pressure ko. pina dalawang take din po ba kayo ng ferrous sulfate? nangyari sakin one time otw sa lying in lupaypay wala maramdam and wlaa na makita and super blury. currently night duty for this week.