holiday!

I'm hoping to be pregnant before going on holiday, 
If I fall within the next few weeks al be 11 weeks when flying...
Apart from drinking no alcohol or going on water slides is there anything else I need to avoid ? 
And would I be alright wearing crop tops with a high skirt or high waisted shorts? 
As I have heard your not suppose to have to much sun on the stomach ? 
So would I be able to sunbath or ?