Hello Glow Babes!

Okay so af isn't due for 3 days. Last night hubby and I BD and we did everything as normally as we always do. I had my finish and he finished right after I did. I was on top and we did nothing ruff. Now my thing is I went to the bathroom maybe 10 minutes after sex and I noticed light pink creamy white discharge. I know it partial his sperm but the light pink is my question. It only lasted that once going to the bathroom and nothing the rest of the night, then this morning I had white creamy discharge with brownish discharge? Now it's back to just all white discharge. Did sex cause the spotting or did I have implantation?