Hey ladies, so confused !!!!

Marcia

So, we’re ttc. I got off the pill October 28th, had my withdrawal bleed on October 31st for 5 days then had my regular period December 7th till the 13th. We did the deed on the 11th and 13th while still bleeding but it was light already (TMI) sorry! But yesterday cycle day 17, I notice pink on the toilet paper when I wipe after peeing and this morning I had dark brown discharge. Could I have fallen pregnant? But that would be too early to be implantation bleeding ? I’m so confused !!