I'm in my mid 20's and have never known my biological father. I have next to no information about him other than a name, vague description and rough location (N.E.Lincolnshire) although DM spitefully remarked that he probably gave her a fake name anyway - I don't really believe that. They had a very short unofficial relationship and she never visited him at home.
When I was a child I was in a community centre in that area and a man fitting the description came in and gave his name at reception, he was there for some group class or other. I didn't have the courage to approach him and ask. I feel like I missed my chance, if it were him.
I've done brief online searches and contacted men via the telephone directory who have his name but everybody I spoke with said I had the wrong person and they didn't know him. I've tried Facebook too.
I'm desperate to know where I came from 
Can anybody help or advise me? I'm heavily pregnant so don't really have alot of spare money to put into intermediary services.