My period was about a month late, I recently had unprotected sex on April 8th and 9th. My period came today. It's heavier than normal. I've had some morning sickness, my breast are tender, Im gaining weight, some days Im tired after doing nothing, and it feels like there's pressure on my stomach. The pressure feels like something is pushing down on my stomach.

You're not pregnant. If it's heavier than usual. You could be having an early miscarriage happens all the time and most women think it's just a really heavy period and never notice. But, if you're bleeding heavier than usual you're not pregnant, you only spot for implantation bleeding and that only happens to a small percentage of women (or only a small percentage notice it) So, you're not pregnant. And even if you were you wouldn't feel anything pushing down this early. I think your giving yourself symptoms that aren't there happens a lot.