struggling to cope after my husbands death

Hi i am new here and this is the first time i have posted anything. My Husband John died on 12th of July after being diagnosed in May this year with oesophageal cancer. I just feel lost and dont seem to be able to move on. He has always been a well man and even when diagnosed they said he was stage 4 and inoperable because it had gone into his liver. He had no symptoms at all apart from a small annoying but not painful feeling in his stomach. He asked if he could take his family on holiday before starting chemo, the consultant said that nothing major would happen in the next couple of weeks. we went ahead and booked a huge family holiday in spain. 4 days after arriving i found him collapsed on the kitchen floor. we rushed him to hospital where they said he was suffering from severe pancreatitusand kept him in for 2 weeks. we flew him home and he stayed at home for a week but was still very sick. he was taken into hospital again on the sunday and after a scan on the wednesday we were told that he didnt have a healthy piece of liver left and were told that he would only surrive another few days. he passes away 4 days later. i just dont know what to do i am all on my own and cannot stop crying, the tears are streaming down my face just writing this. i need help.