Post menopausal bleed

Hi, first post here. I'm 52, had bit of period spotting started Saturday, very unusual for me as, due to contraceptive pill I'm on I've not had a bleed for years. Did have spotting in 2019 which was investigated but only thing found was some calcification in womb. Since started HRT with POP pill. Wasn't sure what to do so rang doctor Tuesday, saw her next day, and now on 2 week referral to see specialist. Am a bit worried particularly by the 2 week referral but glad I took action to see doctor.