The important thing when you are sick is to eat and it sounds like you did fine. This is my personal opinion and I'm sure others will give theirs but I think that if you are not having any cravings, you should finish phase 1 and then go on to phase 2 as scheduled. If you do find that you have cravings then extend phase 1 until the cravings go away.
I'm glad you are feeling better now.
Barbara - Started South Beach 5/22/4
HW/SW/CW/GW - Jan start 169 goal of 2