Girls, I went to the doctor today, she said my head is low, it's time …

Girls, I went to the doctor today, she said my head is low, it's time to give birth (she felt my belly, not on the chair). The whole day is enough for my belly, before only one side was training, like the back protrudes, but not regularly yet Do you think it's worth calling an ambulance? Or wait some more... My belly has dropped very noticeably.