okay so I had unprotected intercourse about 3-4 days before my fertile window is predicted to start, and on that day I had infertile mucus, but within 8 hours I took Plan-B one step just to be safe because I'm always a worrier about this kind of stuff, this was the only time I had sex within this months cycle for me and I'm decently sure I wasn't fertile yet, and this happened about 2 days ago and I'm still not having fertile mucus and my fertile window is supposed to start in a day and I'm just not sure if I should be worried or not, I feel so stupid posting about this but I'm very nervous but I know I can't do anything about it I just need to wait, but how nervous should I be??