Okay. My boyfriend and I had sex around my ovulation time and yes, he finished in me. A week later I start feeling this pulling sensation in my right pelvic area and very mild cramping along with watery discharge. This lasted for about 2 days. I have also been very tired.
It is now two days before my expected period and the watery discharge has turned into white milky discharge and its odorless. I still occasionally feel pressure in my pelvic area. I don't know what's going on! Could I be pregnant?

Head to a clinic to get a pregnancy test or pick one up at a store.

You could be, you might not be... there is no way for us to tell right now. It's too early to take a home pregnancy test and expect any kind of accurate results. Wait and see if you get your period... if you don't, then wait about 2 weeks and try a test then.

Its too soon for a pregnancy test. Too soon even for pregnancy symptoms to manifest themselves. You need to wait about 2 weeks after your period is due to start testing.

Whoops, sorry. It sounds like it may or may not have been at least 2 weeks yet. But if so, get a pregnancy test, otherwise, what you've described is not enough to determine if you are pregnant.