I'm not sure if I'm being a bit ridiculous so could do with some advice or a good talking too!
Bit of background needed but this may be quite long, sorry 
Where I live it is quite rural. I have a dog I walk morning and night around the same time each day but not same time on the dot. I sometimes walk on my own (with dog) sometimes with someone else (more often than not in the evenings)
There are two walks both rural with no street lights and nothing other than the odd tractor, walker, horse rider etc etc. Just to add neither of these walks lead anywhere other than one to a house that then branches off to a longer walk.
So the track I went down today has a house at the top, one a bit further down then nothing till the big house at the end where it branches off.
The middle house (although closer to top of track than middle) goes garden, house, gateway, garden, shed, fence, big tree with the track running along side.
So that's the background now what happened.
I have walked past the middle house, down to big house and am on my way back. I see someone coming and get dog back on lead. The person notices me and moves quickly from right hand side of track to under the big tree (just off left hand side of track) just behind shed of house. Person lights a fag and turns around facing tree.
I find this bit odd but carry on as I get next to him he is still just off track under tree and facing the actual tree. I'm getting a bit on edge as this is clearly a bit strange behaviour.
I say good evening (admittedly I might have sounded a bit nervous) the person turns round while lifting their hood up so I cannot see their face.
I walk past quite briskly! (I'm not sure if IABU but something about the person did frighten me)
As I get nearer the middle house gates I see they are not in as car is not on drive (there is a mid 30's woman on her own living there) I stop and turn to look thinking I wouldn't actually hear if the person ran up behind me. They are still under tree looking straight ahead (not at me, but across the track into side with hedge)
I carry on and as I get to the next house I look again but can't see him and I was not about to walk back and see if he was still there.
Now the whole behaviour of this person was off. They very clearly did not want me to see their face. They were either an incredibly burly woman or a man, fairly thickset about 6ft obviously in black and just quite terrifying.
I am home alone tonight and just a bit worried I suppose that he was either waiting for a person walking (maybe not with good intentions!) or to break into the middle house? Or the thought did cross my mind if was he waiting for my but chicken'd out.
The woman that lived on her own is I suppose fairly vulnerable as her house is a bit away from any others and she is on her own (the house is quite large and obviously worth a fair bit of money so you would presume there could be antiques etc)
This all happened about an hour ago now so it was dark.
I'm not sure if I'm just being silly or should o go and check if he is still there? Phone someone? Or just ignore it all.
Writing it all down makes me think I am over reacting and the bloke maybe just wanted a walk but it really didn't feel like that at the time. His behaviour seemed odd and his body language was quite menacing tbh.
What do the collective of MN think?
Sorry it was so long!