Overweight and preterm birth??

Hi ladies i hope you're all well.. yesterday at 7w4d i had my first appointment and everything was fine. The doctor explained me that the next time i come to the appointment, she'll be prescribing me aspirin in order to avoid the risk of diabetis and high blood pressure so that i won't be on risk on delivering preterm child.

I weight 103kg and my height is 1.70m so i kind of have 30kg more than i should've, and now i'm worried if aspirin is going to harm me or my baby, and i'm even more worried if I'll be in risk of delivering my first baby as preterm through surgery and not through vaginal delivery.

I'm really worried 😔 I was actually trying to lose weight before getting pregnant but when i got pregnant i stopped the diet and continued a healthy lifestyle..