Anxious to take a PT

Carley • Sat, May 23

My SO && I have been TTC. My last day of ovulation (may21) && every other day before then we BDed. So I'm hoping for a BFP. GLOW says AF should be here around the 3rd of June. I'm soooo anxious so I want to take a PT as early as I can so what's the earliest I could take one?