Hi, I had sex with my boyfriend 8 days ago, and my last period ended 6 days ago. I'm on the pill but don't always take it at the same time (but always between 7:00p.m. and 12:00a.m.) depending on my schedule, which I know is stupid and something I need to fix. I took it on time the 2 days after this period but the whole week before it had just been the placebo pill since that's the week of my period. We always use a condom but we were both drinking on this particular night and decided it would be okay if we didn't. However, about 30 seconds into starting we decided it was a bad idea and we stopped before he came. But we had sex earlier in the night with a condom so I'm assuming he still had sperm on him. The past few days my breasts have seemed bigger, my sex drive has been increased, and I've been fatigued. I'm 19 and underweight for my height, which I know are factors.

Maybe I'm just paranoid but do you think there is a high possibility that I am pregnant? How soon can I take a test?