Women do not feel flutters in their stomach (baby movements) until 18 weeks pregnant and beyond. You'd be obviously pregnant by that point.
Women do not have periods while pregnant - it's physically impossible. They might have bleeding, but...
1. This is extremely rare.
2. It's not comparable to a period at all. If a woman's uterine lining completely emptied out of her, her baby would be flushed away as well. The egg is embedded in the lining (that's what the lining is there for), so if the lining goes, the egg goes with it.
3. Heavy bleeding during a pregnancy is a huge red flag for a miscarriage and medical treatment is almost always required.
If you're STILL thinking you're pregnant, why not put your mind at ease and take a test? Everyone here has told you that you're not, but that's obviously not enough to settle you, so please take a pregnancy test. Or better yet, call your doctor and request a blood test.
Why are you mashing on your stomach?