The presence of yellowish-green discharge does not mean pregnancy, but rather the presence of trichomoniasis, because the clinical symptoms of trichomoniasis are yellowish-green, foamy, thin and foul-smelling, which are typical of trichomoniasis. If Trichomonas is found, the diagnosis will be confirmed. This condition needs to be treated symptomatically with metronidazole. Trichomoniasis is mainly transmitted through sexual intercourse, so the male partner also needs to consider going to the hospital for examination. If necessary, men and women should be treated together. During the treatment period, sexual intercourse is prohibited and the diet should be light. Trichomoniasis is very prone to recurrence, so treatment should be thorough. Generally, 3 courses of treatment are needed, 1 course of treatment per month, one course of treatment takes about 10 days, and after treatment, the leucorrhoea needs to be rechecked and tested negative 3 times in a row to be considered cured. To see if there is a pregnancy, you can determine it by urine early pregnancy test, or by selecting the HCG test. If you are pregnant, metronidazole is not recommended, you can consider using nifurtimox, which has relatively less side effects.