Missed period but BFN?

Rebecca✨ • 29,FTM to my 2 year old daughter && coffee-obsessed!
I was supposed to start AF on Wednesday of this week and stop today. I haven't started yet so I took a pregnancy test but it was negative. My boobs are sore and I'm having a bit of cramping/pelvic twinges. I've been TTC for 4 months. Should I take a second test in the morning or wait for my period?