Overheated while walking

Hi everyone. I went on a 45 minute walk earlier today and towards the last 5-10 minutes after walking up a hill i started really sweating. Once I got inside my house, I was light headed a little bit. I drank water the whole time I walked and drank a lot more for the rest of the day but now I’m worried I overheated and may have harmed the baby. It was 80s when I was walking. Has this happened to anyone?