Help me please TMI.

My boyfriend & I have been TTC for 3 months now. We’ve been together for almost 5 years. Long story short. No STDS (only said that bc I looked it up and STDS could be a reason but we’ve both been checked) but the past 2 days after we have had intercourse , I go pee after and noticed I was spotting very light pink but only on the toilet paper. (This happened 2 days in a row) I ended my period on March 10th. The spotting after sex has NEVER happened before. Could this be implantation bleeding? There’s no pain from sex , no pain when I pee. No pain at all.