Nervous!

Okay so I'm 4 weeks and 1 day I took my first test 9 dpo and it was a faint positive, and then I waited until 14 dpo and got a stronger line, I had very sore breast/nipples and I was nauseous especially at night but now today my breast hardly hurt, I havnt felt very nauseous and very slight cramps, I'm nervous because when I had my miscarriage in November the only symptoms I had were sore breasts and cramping one day they just stopped and a few days later I miscarried at about 4 weeks 5 days. Basically I'm just wondering if it's something to be worried about or if it's normal... 😣 also something to note is whenever I took tests in November the lines were faint but this time they are very strong lines. Also just wondering if anyone else went through something similar!?