Strong + OPK's 3 days in a row???

So, I tested ovulation 2 days after bleeding from a MC with a cheapie and it came out + (0 HCG left prior to testing and was having CM). My husband and I had intercourse during that time. Last hpt I took was - about 10 DP "ovulation". I stopped testing and started opk. I got a strong + 3 days ago. These strips are the good kind and I've been testing nearly everyday and never had this strong of positives and for 3 days in a row! I'm not sure if it's finally picking up HCG or if I am in fact ovulating and that cheapie test was wrong? HELP!