Chemical pregnancy without positive test??

So my period came on the exact date it was supposed to but it doesn’t seem like a period usually does for me. It went from light pink to dark red with small clots in it then stopped for half a day, cane back light brown/pink/pale red not even going on a pad just when I wipe and has just stayed pink since. All happened over 5 days including today. My periods aren’t usually like this so could it be just a lighter period then usual or have I had a chemical?? Did a test and there was a extremely faint line today but I’m not sure if it was just an indent it was so light. No harsh comments please I just had a full term stillborn 3 months ago. Thanks