i don't know if they work or not but here is my expreience
i had heard that they would work so i got a hcg shot and then on
day six after i had it and knew there was hcg in my system. the hpt was
postive and the opk had absolutely no reference line
Hi just seen 1978 on your name, thats the year i was born. Whens your B day? mines 4-26
Here's some good info: http://www.peeonastick.com/opkhpt.html
No, I don't think it's work. Go to walmart and buy walmart brand HPT. it's cheap and work good.
good luck
Well, I've heard that OPKs can pick up HCG too, so I would definitely go out and get a HPT to find out for sure!!! As for breast tenderness, some get it right away, others get a few weeks into their pregnancies, and some never get sore breasts. So I don't think the fact that you don't have them means anything. Good luck!!!