5 days late

5 days late, periods always regular always 28 days like time work :) thought I was taking pregnancy strips and they were ovulation! I know LH is present most of your cycle but being 5 days late and ovulating on cd13...I know HCG and LH are very similar and pregnancy hormones can show up on ovulation test and I know that you should detect hcg before an ovulation test detects it. Had period like cramps for a week so I thought Af was arriving! Had small dime size bright red on tampon and then next day had a small brown spot! Nothing less (implantation? Never had before with any pregnancy) I have seen some post where woman got positive on ovulation when late and had gotten positive hpt! Has this happened to anyone else? Have u gotten a positive opk and were pregnant as well?