Hi there! We are ttc and have made some opks this cycle, got positive LH surge test and had sex the day of and the next day. That was on oct.3 and 4. Then, today, on oct.11, I have light cramps and very light spotting, I saw like two small blood fibers and my discharge is a big darker, like very pale beige-pink. So the question is could it be implantation bleeding and where should I test better?