Hello, I Think That I Might Be Pregnant. I Was

Hello, I think that I might be pregnant. I was on birth control but did not always take it at the same time everyday while sexually active with my partner for two weeks. During the second week I got my period. The week after that, I had extreme insomnia and some dizziness. Then, the next Sunday night of the following week I had to urinate often along with some sharp rectal pain and vaginal dryness. I fell asleep around 2AM and woke up at 5AM with nausea which lead to gagging and dry heaving. I was scared so I stopped taking my birth control and I have not taken it since. With the days that followed I noticed the veins in my breasts to be more prominent, hunger pains, sneezing/higher mucus production, diarrhea/constipation, and more dizziness. That Wednesday I started spotting with minor cramping. And now I have had somewhat light bleeding for the past three days. One of those days I saw what looked like blood clots in the toilette, too. What should I do? Is it normal to bleed this much if I am pregnant?