TTC, and I don't know how it's going!

My husband and I have been TTC for over a year. We got pregnant 3 times, but each time ended in miscarriage. Frustration beyond belief, right? So, we stopped "trying", and just opted to enjoy ourselves. Well, now I'm 23 days late. I had some pink colored discharge a few days ago, which I thought was my period arriving, but that wasn't it. I also have all of the other classic period symptoms: irritability, cramping, tender breasts, gas (lol). I've taken about 10 pregnancy tests - all at different stages of lateness, all different brands, all negative. I'm tempted to go to the doc, but terrified of what the answer will be, either way, ya know? I don't want him to say the tests were wrong, and then start bleeding a week from now. But I also don't want to hear again, "No, you're not pregnant." I'm so...argh! I just want to have another baby (I already have a 7 year old girl, so I KNOW I can do it!).