Although I don't know the pet hospital in Fuyang, I hope you can find a doctor with sterilization experience. This is very important.
You can go to sterilization after a week of estrus. Has your cat been vaccinated before? If not, it is recommended to vaccinate first, after the first vaccination, and then vaccinate one month later. Then choose surgery, 24 hours before surgery, fasting, drinking water, (otherwise the operation is dangerous). Don't feed for 24 hours after operation, drink water after 24 hours, and eat it the next day, preferably digestible, and don't eat hair, such as beef, mutton, fish and shrimp. Small animals have different physical qualities. If you don't eat for 3 days after operation, you can consider giving the hospital some rehydration and supplementing nutrition. You can also give it glucose water, which is generally no problem.
The cat suggests sterilization, otherwise it will be very painful when it is in estrus. If it is farmed, it is also a burden to give away a kitten. Generally, cats estrus twice a year/kloc-0. If you don't do surgery, it will be easy to endocrine disorders after a long time. Family members and small animals are in pain.
Wish the baby a speedy recovery!