Hi ladys alittle tmi but I could so use some advice

So ladys I stop trying to conceive for a while I left glow and everything I just really needed to step back alitte ...anywho so I was supposed to start my cycle on 9/17 but I started spotting on the 15th n its stoped after a day the on the 17th I started spotting again only it never got heavy like my normal Af its just a little blood and a lot of mucus and now its stopped again so I'm confused in my 16th yrs of have my period I've never had alight period or a short Af I always bleed for 6 maybe 7 days see