Hello, I have some questions about some things that have been happening to me.

I am wondering if I was pregnant, yet I think it is too soon to tell, because it has only been a little over a week since I have had sex. We did not use a condom, because he did not have a one at the time, so we tried using the withdrawel method. But you see, I am not sure if he pulled out in time. I thought that it was a possibilty I was pregnant, because I had been getting early signs, such as breast tenderness, fatigue, dizzyness, and I had been feeling gassy. Then a couple days ago, I had some spotting in my underwear. That really made me think I was because I had researched a thing called implantation. But then, the bleeding had gotten very heavy, in fact the most heavy it had ever been. It had gotten to the point where I had to change my tampon/pad every 30 minutes. There are giant blood clots, that have not been stopping, and now recently I realized now when I go pee, there is a stretchy, stringy discharge mixed with some blood coming out of my vaginal area. This kind of period has never happend to me before, and I am really starting to get worried. Should I go to the doctor? Does this have anything to do with pregnancy?

Thankyou for reading,

-Sarah