Pregnant or not?

4months ago my period was basically absent, with old blood. The doctor diagnosed me with a tiny cysts and said that the cyst might have caused that cycle to mess up, she said to continue my birth control and it will go away (Yasmin-the pill). Well I noticed it went away. Then my next period was VERYYYY heavy, the most heaviest I think I ever had. The one after that came two days early as spotting, and turned into a small/light period that lasted a long to average amount of days. This past period did not seem like it was comming, because I normally start in the morning or noon, but it came later that night, which I never start it at night, so it was not exactly a day late, but hours later than usual. It was lighter, and when I thought it was going to end I kept spotting. Been a week since that period. I am having an odor I never had before down there, and my boobs are sore when fooled with. Cramps,discharge,burning when pee-i guess y.i. or uti. I feel a knot by uterus and uterus is hard