what does oxytocin do?

it is found in sperm but also when women go into hospital to be given an induced labor the are sometimes drip fed oxytocin as this helps bring on contractions and speeds up labour

It's not found in sperm. It is a hormone that is synthesized in the hypothalamus, and then stored and released by the posterior pituitary gland.

It stimulates the uterus to contract during childbirth and maintains labour during childbirth. It is also secreted during suckling and cause the production of milk from the mammary glands.

You could do a project on all of the hormones involved in pregnancy i.e. show a flow chart that represents the hormones in the brain and which organs they work on. Talk about disorders where these hormones are not properly produced.