I don't know about "normal" ovulation but if you had sex a day after your period than chances of pregnancy is low. Your chances are high if you have sex during ovulation or immediately after because the egg only has a 24 hour window to be fertilized. It seems your ovulation won't be for another week to week and a half after your period. If you want the date(s) where you are highly fertile I recommend doing an ovulation calculator which can be found online. Just plug in the numbers you listed. Best of luck!
Your cycle varies from 26-29 days, but the most common is 27 days. This is an average length. As for "normal" ovulation times, we can't tell you that. Generally speaking you will ovulate two weeks BEFORE your next menstrual cycle, so having sex a day after your period usually doesn't result in pregnancy unless you ovulate early in your cycle. If you're trying to conceive you need to use other means, such as Ovulation Predictor Kits, charting your Basal body temperature, checking your cervical mucous (when you're ovulating or about to it will change and resemble egg whites and be very stretchy) and also you can use online predictor kits. If you're NOT trying to get pregnant, you shouldn't take the chance ever as you can ovulate randomly and it can result in pregnancy---this also shouldn't be a "if it happens I'll be happy" thing. You should make sure you're completely ready mentally, financially and in a proper stable relationship.