Could I be pregnant

[Kim23]

Hi, have been diagnosed with pcos, 2 years now, I have irregular periods and haven't had a period since September last year, I waiting for an appointment from the specialist, I have been have some symptoms last 2 weeks, I started dieting and lost nearly a stone, recently I keep feeling like my period might start that's about 3 weeks now, last week and a half my nipples have been so sore can hardly touch them, I have now been going bed by 8:30 cuz I just can't keep my eyes open. I don't want to waste money buying test because it's too disappointing to see bfn.

Is it possible?