Im a regular who has namechanged because this is overwhelmingly embarrassing (so much Ive come to an anonymous website for advice), please dont laugh at me

Last night for the 3rd time in my adult life I wet the bed
kind off. Well it didnt get onto the bed, but I still woke up weeing. The first time was when I was at uni so about 1999/2000 (this was the first time I ever remember as I was so young the last time). The second time was about 2/3 yrs ago, but did it again last night.
Do I need to see the Doctor? Im really worried about going back to bed.
I should say I do have a DH who last time was great and very understanding, as I managed to wake up before it got onto the bed last night he doesnt know cos I am far too embarrassed. My 4YO is better at keeping dry on a night than me 
Is this normal? Do I have a problem? I dont usually need the toilet in the middle of the night and I havent been drinking or doing drugs (ever for the drugs part). Im not overly worried about anything, infact luckily I have no worries, well apart from this one now.
Please dont laugh or be nasty to me, I am genuinely very embarrassed by this, but also worried. Do I need to see the Doctor or see if it becomes more regular? Im so worried about going to bed tonight now, dont want it to happen again.