Zoloft and Periods

Hey guys! I was just wondering if anyone here has or is currently taking Zoloft. If so, has it ever messed with your cycle?? I just started taking Zoloft for the first time exactly 2 weeks ago. It does feel like it’s starting to work a bit so I know it’s decently kicked in. But today I had some light cramping and when I went to the bathroom there was very very light spotting. I’m about 1.5 weeks away from an expected period. I’m also on birth control. I’m just wondering if this is common or has happened to someone. Or if I should worry that it’s possibly implantation bleeding? Thank you!