Can somebody give me advice on how to deal with my exams?

This week I have been off school but stupidly temptation got the better of me and I haven't revised at all. I have a biology exam on tuesday, an ict and re exam on the 16th and maths on the 21st alongside an english exam and a spanish writing exam that I do not know the dates of. I am feeling the pressure now and my stress levels are getting the better of me. I just keep crawling back into bed because I don't want to face all the work. Can someone please please please help me.