Tawaaf

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? 

Performing tawaaf with long intervals in between the rounds

Q: Is it permissible to separate tawaf rounds due to pain? 

Example, I did a few rounds of tawaf one day and a few another day until the seven rounds of tawaf have been completed? 

In the above mentioned situation, if a person is unable to do complete seven rounds of tawaf walking in one go due to pain but can do it separately like the above mentioned situation, will it be permissible for him to do complete seven rounds of tawaf in a wheelchair?