I started having red itchy bumps end of 2nd tri too and it spread to whole tummy, chest and back now at 3rd tri. Had gynae appt at week 28 and he said it is likely hormonal and not a big issue. Given mild hydrocortisone cream and piriton for the itch but I chose not to take any oral meds but bear with the itch. Dr also did blood test just to make sure it’s nothing serious. Best to let your gynae know and do blood test for a peace of mind :)