Pelvic pain due to Oral contraceptions.

We had unprotected intercourse during the 20th day of my cycle. He didn't enter me though, we just feared we used the same hands to rub each other. I was scared and visited a gynaecologist and I was suggested to take Ovral-g as emergency contraception. I took the two tablets the next day and two tablets the day after as instructed. I got my periods as expected after It was heavy for the first two days and gradually decreased. Then I had pelvic pain for a week after my periods, not very severe though. I got my second periods a little late on Jan 29th. This periods was also very heavy and I had severe pelvic pain. Now after the periods I'm having constant pelvic pain for two weeks. Yesterday I was nauseous and the pain seemed to extend to my neck and shoulders. Please I'm very much worried what's happening to my health and whether I'm pregnant. Also can you pls explain the side effects of the pill