Hi big dutch and welcome!!
god I think we have all been there with headaches etc but you just gotta hang on in there it does pass, I have nearly completed week 2 and somedays I felt like chucking it in cause I felt so bad. I didnt and in under 2 weeks I have lost 14 lbs I feel great now!!
p.s you aint that big I used to weigh 371lbs, I was a big lady!!

Anyway good luck