Unusual Cycle & Spotting Thoughts?

Okay so I'm not trying to conceive, I'm not and haven't been on any form of bc for over a year now and my cycles have been spot on every month to the day. They usually last 7 days, are very heavy and are also very painful! Recently I started seeing a chiropractor who also does acupuncture and have been working with me for my heavy and painful cycles, I started working out and I have also been trying out some new essential oils to help with hormonal balancing etc. this month I got my period the day after an adjustment and also the day after I had sex. It was the lightest period with no pain at all. It lasted for barely 3 days and then was over, almost like I didn't even have one. A couple days later I started spotting and it's very dark and the spotting has now been going on for 3 days. None of this is normal for me and don't know what to make out of all of it. I don't feel like I'm pregnant, that's not my main concern I'm just wanting to stop the spotting I'm having and am concerned to what's going on with my body. If this is normal after changing so many things.