Going crazy... help..?

So I lost my son at 21 weeks on may 18/16 and this month is our first month ttc again before losing my son I never kept track of my periods or ovulation so this is all new to me and I also have PCOS and didn't have regular periods but before I conifer my son back in December I got to periods in a row and after having to give birth to him in may I have already had my first cycle and had sex everyday in my fertile window and I'm not suppose to get AF till the 26th of July but I want to do a pregnancy test so bad I want my BFP and my rainbow baby so bad!! When is the best time to take a pregnancy test cuz I'm going crazy right now I'm so anxious