I have been in my current work for 3 months,y doctor just schedule me a minor suregy and I will need to take 2 weeks off. Can I lose my job?

That is up to where you work, if you have a contract, what their leave policy is. And can even be how much you have had to take off during the last three months.

Many places will try hard to work with you, others may not. You need to discuss this with your HR so they know as early as possible