Tawaaf

Back or chest facing the Ka'bah during tawaaf due to construction barriers

Q: During tawaf on the first floor there are times where construction barriers are blocking off certain areas. It is such that we have to walk diagonally where our shoulder moves away from the Kaabah and it seems like our back is facing the Kaabah (but we can't be certain because we can't see the Kaabah from the first floor). It happens few times during tawaaf. What should we do in this situation?

Area below the navel becoming exposed while performing Tawaaf in ihraam

Q: When wearing the ihraam cloth and performing tawaaf around the Ka’bah Shareef, I am afraid that part of my awrah (a small area below the navel) will be visible at times, despite me wearing my ihraam belt in which I keep my money etc. 

If part of my awrah is exposed, will the taawaf still be valid? Will I have to pay any compensation for it?