Spotting days before period. TTC. Help


My husband and I have been ttc for 13 months. My period was suppose to start on the 18th/19th but I started spotting on the 15th like literally a spot her and a spot there. That continued for 3 days. Then on Sunday it started really heavy. Then on Monday went to light and then Tuesday and Wednesday and today back to a spot here and there.

My period is never like this. Never. I thought when I first started spotting that it was implantation bleeding because the timing was right on time for when we would have conceived (on the 3rd-4th) but then it got really heavy on Sunday.

I'm so confused. I just needed someone to run it by. Someone that is smart. Lol

I don't know if I could be pregnant or if my cycle was just weird this month.

Also I had a tonsillectomy a month ago (tonsils taken out) maybe that has my period all jacked up??