I have a few questions about ovulation tests..

Hello I'm Hayley, I'm 22 and my boyfriend is 24. I had a miscarriage April 20th 2016, I waited the full 3 months before trying again. I didn't get my periods back until July so it worked out. But no luck so far.. so I started using ovulation tests this month and are you just supposed to get one positive ovulation test or can you have multiple leading up to it? The top one was yesterday's and the bottom one is todays. Any information will be great TIA