Hello, I Have Taken The Day After Pill Before (plan

Hello, I have taken the day after pill before (plan b) and I would get my period the month after around the same time as usual. I had gotten my last period in July (11th) and had intercourse a day after it was done. My partner did not pull out this time and we got the day after pill the following day. About a week after i took the day after pill(a different brand) i got what felt and seemed like a period. By that time it had only been about a week or so since i had gotten my last period. The bleeding lasted 7 days of heavy flow bleeding and cramps. It is now August 18th and i have not gotten my period yet. I am however, getting bad cramps throughout the day, i am bloated all day long, i am urinating alot more, every now and then my breasts start to hurt, and i am constantly hungry. There is no burning when i urinate jist pressure on what seems to be my pelvic or abdomen. I also have some white discharge that i never did have before. I had also been getting headaches in the morning of Saturday, Sunday, and Monday of this week. I did take a pregnancy test and it came out positive. We have had unprotected sex since I last took the contraceptive, but my partner does pull out. I understand thats not a good method but I am a little worried about what my body is doing as of now. Since I have gotten these cramps we've intercourse once and i did feel pressure in the process. There seems to be alot of pressure between my hip bones and my back. Im not sure if its the hormones from the pill and my body is readjusting itself, or could it be something more serious. I thought maybe i'd ask before i go see a doctor in person.