Terrified of another false positive

I have had 2 precious false positives and they were devastating. I am 2 days prior to my expected cycle. I took one this morning fully expecting it to be blank again. I didn’t even count down, just vaguely looked at the time. My husband came in to use the bathroom and asked me what was wrong and I just said “there’s a line”. I can’t celebrate or be happy. I’m terrified this is another false positive, so I’m getting a blood test today and 48hrs later. I’m so scared it will be nothing. Or even if I am, that it won’t last. If it is true we probably won’t tell anyone until we are sure it’s an IUP.