Please help i think im going crazy

Brooklyn
I usually have a normal cycle 28 days. My SO and I baby danced everyday day leading up to ovulation and three days after lol. January was a good month. My cycle at the end of January was five days late and shorter then normal The one I had in Feb was on time but was more brown then red blood and only lasted four days and was really lite. Very unusual for me. I know periods change but honestly I have been so constant with my periods I know without a doubt that these two periods were just not normal for me. I have an app with my on in April. The test I took in January was negative and I just can't bring myself to test again when I had a period. But a huge part of me wants to because of how off my periods were. Has anyone else experienced this? What advice can you give. Should I test again? Am I crazy? Are you having a good day? Haha honestly I just need some words of encouragement and advice.