Hi Friends, when Iam converting leads, its converted into Account and contact.I have one more trigger on account with the field 
contact_associated__C which is the lookup to contact. When account is created it checks if contact_associated__C is null,
if its null, then it takes( name, email and phone) from account and creates a contact and that is associated with 
this contact_associated__C. But now the problem is when Iam converting the lead , its creating account and contact,
 the trigger which i have written on Account fires and associates that contact with  contact_associated__C, 
 but i want that the contact which is coming when lead is converted should be associated with contact_associated__C. 
 but this is not happening . Please find the code below.
 
 trigger updateFundraiser on Account (before insert, before update, after insert) {
    List<contact> newConls = new List<contact>();
    if(Trigger.isUpdate && Trigger.isBefore ) {
        set<id> conIds = new set<id>(); 
        for(account a1: trigger.new) {
            if(a1.Contact_Associated__c != null) {
                conIds.add(a1.Contact_Associated__c);
            }
        }
        system.debug('conIds::'+conIds);
        map<id,contact> conMap = new map<id,contact>([select id, Name, Beneficiary_Name__c,Email, MobilePhone from contact where id IN :conIds]);
        system.debug('conMap::'+conMap);
        for(account a1:trigger.new){
            system.debug('a1.Contact_Associated__c::'+a1.Contact_Associated__c);
            system.debug('!!!!!!'+trigger.oldMap.get(a1.id).Contact_Associated__c);
            //if(a1.Contact_Associated__c != trigger.oldMap.get(a1.id).Contact_Associated__c) {
                system.debug('herere!!!');
                if(a1.Contact_Associated__c != null){
                    a1.Mobile_Number__c = conMap.get(a1.Contact_Associated__c).MobilePhone;
                    a1.Created_By_Email__c = conMap.get(a1.Contact_Associated__c).Email;   
                    a1.Name = conMap.get(a1.Contact_Associated__c).Name;   
    
                    system.debug('herere!!!');
                    system.debug('a1'+a1);  
                } 
            //}
        }
    } 
    // second part 
    // for after insert
    system.debug('here!!!');
    if(Trigger.isAfter && Trigger.isInsert) {
        system.debug('here!!!'+trigger.new);
        for(account a1:trigger.new){
            if(a1.Contact_Associated__c == null || a1.contacts.size() < 0) {
                if(a1.Lead_Converted__c == false) {
                    contact c1 = new contact();
                    c1.Beneficiary_Name__c = a1.Name;
                    c1.LastName = a1.Name;   
                    c1.Email = a1.Created_By_Email__c;
                    c1.MobilePhone = a1.Mobile_Number__c;
                    c1.AccountId = a1.id;
                    newConls.add(c1);
                }
               
            }
        }
        if(newConls.size()>0) {
            insert newConls;
        }
    }
    // for after update
    // updating account associated Ids 
    set<id> conIds = new set<id>();
    map<id,id> accIdsVsConIds = new map<id, id>();
    for(contact c1: newConls) {
        accIdsVsConIds.put(c1.AccountId, c1.id);
    }
    List<account> accToUpdate = [select id, Contact_Associated__c from account where id IN : accIdsVsConIds.keyset()]; 
    for(account a1: accToUpdate) {
        a1.Contact_Associated__c = accIdsVsConIds.get(a1.id);   
    }
    system.debug('accToUpdate::'+accToUpdate);
    update accToUpdate;
}