How not to worry?

This 1st trimester has been going by so slow. I have history of miscarriages and try not to worry. I am going on 9 weeks... my breast have actually gone down and just the nipples are sore to touch. Nothing like the first 5 weeks when they were full, hard and so sore. The bloatness has gone done a lot. I actually lost a pound and half since yesterday. I know that's not a big deal but according to my doctor is since I am considered underweight. I don't even feel pregnant anymore besides waking up twice a night to go pee. Constantly wondering if my baby bean still has a beating heart and growing. How to not worry? Next appointment still isn't for another 3 weeks away. Why does my appointments have to be a month a part? Its not good for nervous mothers. Lol. Any advice to a worry wart woman?