Spotting(repost and kinda long)

I had my period this month that was seven days late. My period was very light except for one day.(second to last) then the day after it stopped I started spotting some and then there has been a couple of days where it was dark and clotty, so I used a tampon but it didn't absorb into it(wasnt heavy enough I guess?) so i just went along my day(s) without one and only kinda stained my panties on the "heavy" spotting days. I spotted a bit yesterday (and a bit today after BD) should I go to my doctor for possible pregnancy/mc or just wait to see if my flow comes in March?

(i have been craving things i don't usually like nachos and tacos...that kinda stuff, been having heart burn/indigestion..sick twice in two days thus far)(i owe alot at the doctor and i went before this stuff started happening so thats why i ask)

Thanks