Just wondering ttc, any guidance?

I've been ttc for 9 months now. For the past two or three weeks I've been VERY emotional, I could cry about anything. I was super horny about 1 week ago. I've been nausea for about 3 days now and now I'm starting with insomnia. I have irregular Periods. My last period started on the 20 March so I'm supposed to be ovulating this past weekend according to Glow. Could I be pregnant? It seems impossible to me... How long do I wait before doing a home pregnancy test?