Bleeding or normal cycle ?

Hi , please I’m really worried. I had unprotected sex with my partner in January and I started having some pregnancy symptoms by February. My period was also late, which drove me to take a pee test. I took 6, two each from three different stores, all positive. I decided to have an surgical abortion last week. After the procedure I didn’t bleed, just little stains on my panty liner. Four days later I began cramping a lot and then I began to bleed. Now I’m beginning to feel it’s not just bleeding but my normal period is back. But I read that periods won’t return until 4-8weeks after. Why is mine back? Was I ever really pregnant ? Could I have gotten a false positive 6 times ? I’m fighting the emotions alone of what I have done, not to mention if there was nothing in the first place.