Afraid to take hpt

So Glow said "go ahead and take that test" today. I'm scared that it will turn out bfn...again. For the last 3 months, I had different symptoms each month that made me hope that I was pregnant. Ttc longer than that though. Not to mention, I am sick now. Head colds, sore throat, headaches. On and off cramping. Nipples feel like being poked by a needle. Bbt was the flat but above coverline post O for 6 straight days. And today it went up. I don't want to be discouraged again. So, I'm waiting till AF is due.