Nervous about testing... Finding it hard to wait.

Im new on here. First time I've written a post. I'm 35 today and am due period tomorrow. I've been TTC for 2 months.  I'm on CD 25 on a 25 day cycle this month although seems to fluctuate as I was 29 day cycle the previous month. I have symptoms of tiredness, sore nipples and darker aerolas, smell sensitivity and nausea. Some cramping or dull pressure feeling in stomach. Really really hoping I am pregnant but wondering if it's my mind playing tricks. No sign of period yet. Wondering how long I can wait to test... Dreading a negative result. I want to be a mummy so much! Not sure how long I should wait to test?? Any thoughts?