Hi @adena-braun , it is an interesting question. The term gynaecologist is sometimes understood differently by different people. The specialty itself is known as Obstetrics and Gynaecology (O&G). Obstetrics is the field of medicine dealing with pregnancy and childbirth. So when one is pregnant, she will consult a obstetrician.
A gynaecologist is a specialist dealing with problems related to menses, the womb, the ovaries and the woman genital area. So commonly, women will visit the gynaecologist for women problems like menstrual disorders, menopause, urinary incontinence, growths in the womb and ovaries etc.
To add on, since I am a family physician, many preventive women health issues are handled by family physicians - your friendly neighbourhood GP! Things like HPV vaccine to prevent cervical cancer, pap smear/HPV test to screen for early cervical cancer, oral hormonal contraception etc. Yes and of course we will assess your problem and discuss with you whether you need to be referred on to a gynaecologist - private or subsidized. Subsidized referrals to restructured hospitals (KKH/SGH/NUH) can be made via polyclinics or CHAS GPs (if you have a CHAS card of any colour).

Dear @adena-braun , I am a breast surgeon, but I hope to share my advice here: I believe in right siting of care, and in preventive medicine. Do find a good Family Physician ("GP", general practitioner) who can see you on a regular yealr basis to discuss isues like vaccinations, screening for lifestyle conditions such as high blood pressure, diabetes, and targetted screening for certain cancers as age appropriate. Dr Quah has given a great answer! I wish you, stay in the pink of health!