Thank you for your query.
Some amount of seminal fluid does drip out when the penis is pulled out.
It is quite normal.
To understand whether there is any ejaculatory dysfunction, you need to consult an Andrologist and have a complete sexual counselling
I wonder what you mean by saying you never had penetrative sex yet, and then you say your husband ejaculates inside you.
That means penetrative sex in itself.
You need to have his semen analysis
done, your ovulation documented and status of your fallopian tubes ascertained in addition to having a complete baseline ultrasound