Does this seem like I'm pregnant?

I've been on birth control for about 3 years. However, my family has a history of getting pregnant on the pill. My boyfriend and I had sex both 2 weeks, and one week before I got my period. I still got it, but I honestly cannot remember if it was shorter, or lighter or anything. I think it was lighter for the most part wit hmaybe one day of heavy flow. After my period, I started getting cramps in my stomach, and A LOT of nausea!!! I get sick pretty much every day, in the morning and sometimes throughout the day. I have been getting more lowe back pains as well and I've been kind of gasy and I am still getting stomach aches and random headaches. I have been peeing a little more frequently but I have no sore breasts... but my chest hurts (as in my sternum and upper rib cage/side of my breasts). When I went to the free clinic they wouldn't test me because I had my period. Now I'm not due for my period for at least a week or so... my boy is pretty sure that I am but I need more than just HIS opinion. (I plan on taking a home test soon by the way!)

it doesnt seem you are pregnant from your history...Still the bleeding can be a threatened abortion or an incomplete abortion...Do a urine pregnancy test..it doesnt cost much anyway...
I would rate your chances of being pregnant if you took the pills regularly as .01%.

an abortion?! do you mean miscarriage?!