Copper Coil Nova T380 - Need some information

Hey,

​I just recently had the Nova T380 (non-hormonal copper coil) fitted 2 days ago (8/5/2018) and I was just wondering if my symptoms are normal and whether you guys are experiencing what I am going through just to put my mind at ease (I panic over the littlest of things concerning my health so please bare with me).

​All has been fine within the first two days, except from the loss of appetite and a bit of cramping which is what I was expecting. I still haven't had any spotting or bleeding (but I had been on the pill which stopped my period for 2-3 years so I'm thinking its just the hormones getting out of my system). But today I have felt so sicky and nauseus after I ate and was worrying why that is.

​With my old contraception I was so used to the fluctuating eating habits but its been 2 full days now that I have not been hungry and when I have eaten (which was only a soft cheese sandwich) I felt really sick for about an hour.

​I was just wondering if this is something I need to be concerned about or whether I need to shut the hell up basically and I am worrying over nothing.

​Also- another question: Due to me not having a period for so long I had asked the doctor (in the less weirdest way possible) when I can pretty much have sex again and as we both didn't know when the end of my last period was so he stated that I wait 2 weeks. However, in the leaflet given to me as well as additional research it states that as soon as my coil is fitted I am protected. Should I follow what my doctor said or trust the leaflet and additional research?