Thank you for your enquiry. Haemorrhoids are a very uncomfortable side effect of pregnancy but there are treatments available that can make them more bearable. It is important to be aware of the signs that they may forming and to avoid any straining. Have a high fibre diet and drink plenty of water. If your haemorrhoids required no ongoing treatment last time, if they reappear this time, they should cause no problems. Remember to keep aware of any problems in that area and keep healthy. Walking is very good for you too.
Thrombosed haemorrhoids are not a reason alone for a Caesarian section.

Best wishes,