Hello ma'am and welcome.
Based on the lrovided symptoms there ciuld be many causes for such a presentation like infections, hormonal
imbalances, birth control, pre-menopause
I would recommend a pregnancy
test yet again this time using an early morning urine sample, and you may have to visit a doctor to find the exact cause for your symptoms. Your age is a vital factor, so please do provide all your details to your doctor.
Hope this helps.