Heating Pad... feeling like I'm doing everything wrong!

Anid
I feel as if I'm doing everything wrong. First pregnancy and a little over 5 weeks. Went to a massage place and she used a heating pad on my stomach. I didn't even think about it (since it felt so nice for my cramps) until a quarter of the way through (15ish min). Then I asked her to remove it. 
Then I couldn't help myself and ate a raw oyster at dinner the same day. 
This is on top of a cold I haven't been able to shake off for almost 3 weeks now. 
I'm feeling very sorry for the baby now!! I keep messing up. So worried!!
Oh, and wishing everyone a Happy Mother's Day!