About a month ago, I had sex with a condom. I am also on the pill, and have been for several years. I hadn't been taking the pill at the same time each day when I had sex, in fact, the next day I took two to catch myself up. I got my period a few days later. It was normal, not light at all, and lasted as long as it usually does. However, a few weeks later I started to feel sick to my stomach. I took 2 home pregnancy tests, both negative. I've heard you can still get your period when you're pregnant, so basically I have been very stressed about this. I'm not sure if the stress is making me feel sick? I just need some insight, I am driving myself crazy. Thanks.