I need help please

I need any suggestions, I will be going to the doctors regardless in two days because I have no idea what’s going on. I’m a little over two weeks late. So I get a pregnancy test, and it came out negative. I took another one a few days later early in the morning and it came out positive. Right after that I started bleeding. Freaking out as to whether I’m  pregnant or not so I go and buy another pregnancy test. I take this test around mid day, and it comes out negative. I haven’t taken another test since. I bled for a total of two days and it had stopped. has something like this happened to anyone before?