Performing tawaaf on the second and third level

Q: If a person performs tawaf in the lowest floor around the ka'bah (ie. the sahn floor), it is likely that he will (unintentionally) come in physical contact with women due to the crowd, especially close to the al-hajar al-aswad corner. Will he still be permitted to perform tawaf on this floor (whilst doing his best to avoid contact), or is it wajib for him to perform the tawaf on any of the higher floors where the risk of contact is less?

Yellow discharge after haidh

Q: I get my haidh for seven days every month but on the 8th day and sometimes on the 9th day I see a yellow discharge. I am not sure whether to consider this as haidh or not because I experience discharge during my clean days sometimes its clear and sometimes it's yellow.