I couldn't stop crying during a hymn and I had no tissues. 
The communion hymn was one my DM loved, we sang it at DF's funeral, then again at DM's. I could do with DM's support at the moment and really felt her presence but felt such a fool crying, we were right near the from too.
Five minutes later we sang 'Be not afraid' and I realised, for the first time that I'm terrified, I'm having a brain tumour removed next week so started crying again!
I've now put a packet of tissues in my handbag and won't be going anywhere without them again! 