Opk and hpt

shayelee • my names shayelee i currently have two children 5yrs and 1yr from a previous relationship me and my husband have been together two years and we have been ttc for the past 3 mnths
So i was googling opks and they all say they can detect hcg because lh and hcg are similar but if ur not ovulating then it will come out positive if ur pregnant... Any opinions?