Scared to test

After 6 years of ttc number 2, 1 miscarriage, 1 ectopic and being told the chances of conception and carrying a successful pregnancy are less than 5%, I have seen more negative tests than I thought possible. I go through phases of testing before my period, convincing myself that this is our month, to others where I don't even realise I'm due my period and it surprises me. It happens after this long as you kind of give up. I've felt shit for nearly a week now. Haven't been able to put on a bra due to breast being so swollen and sore I can't physically wear one. Migraine that I haven't been able to shift for more than an hour at a time. Fatigue to the point I'm struggling to stay awake most of the day and get exhausted from doing the smallest of tasks. Now I'm a day late (15dpo), no sign, just loads of white cm. I have refused to buy any tests this year until I have missed my period (my new years resolution to try and put ttc to the back of my mind as each time I've fallen pregnant was when something else big was happening in my life so I wasn't really ttc). I'm petrified of testing incase it's negative, having a period is easier to deal with than seeing a negative test trying to wish it positive! Just needed to get it out. Xxx

Edit: took a test at work 2 days late, 2.5 hours holding urine as I couldn't wait any longer, negative, but still no sign of af so we'll see when she arrives.