So I started my period on feb 6th and bled very very heavy on the 7th and 8th. The 9th I bled in the morning (didn’t completely fill a tampon) but still quite a bit changed my tampon around noon and when I took it out in the evening there was basically nothing on the tampon. That night (yesterday night) me and my SO had unprotected sex and he did not pull out. Haven’t bled at all this morning so I assume that yesterday morning was the end of my period... but my question is do I need to take plan B or should I be okay? Says I’m supposed to ovulate on feb 20th but that my fertile window is the 15th to the 21st.... thoughts please? No judgement.