5wks 5 days

I have been feeling so cold the last week. Like I have a blanket, a hoodie on me and still feel so cold. I don’t know if it is the nerves because I just miscarried in February and got pregnant again so I am very stressed about this pregnancy… did anyone else have a similar experience? My 3 main symptoms are sore chest, feeling super cold always now, and belly aches that come and go… I hope I’m not miscarrying again😩😩😩 any suggestions on how to have a positive outlook/ not worry so much either?