Rather shaken after today, so partly posting here for traffic. Will try and make it short.
DH and I have a good relationship. He can't drive at the moment due to crutches and we had to drive a four hour round journey today, on the dual carriageway, some motorway and LOTS of horrible, curvy country roads.
I only passed my test eight months ago and since then I have never gone on a motorway, only on one short dual carriageway and have stuck to local driving.
So today was my first proper journey that was long, and only the second journey that I had to use a sat nav. I'd also never driven on such busy, country roads before. I was very nervous and now feel shit. 
DH has said I'm a "fucking awful driver."
On the journey, DH insisted my seat was too far forward, so I moved it back despite me thinking it was fine. He was insistent I was too close. This meant that I couldn't reach the clutch as well as before and five minutes later I almost lost control on a country road at 45mph as I couldn't reach the clutch, which meant I couldn't lower the gear.
Then on a dual carriageway I slowed down for a car to merge to about 50mph, the car swerved to just in front of me, almost hitting me. I swerved as well, but didn't go out my lane but the car on my right hit the horn multiple times as obviously I freaked them out.
Then on a three laned roundabout the lines were very faded and then totally disappeared. The car behind me on the right was very close- so on the inner side of the roundabout- and then got aggressively close. I had to move to the right of my now disappeared lane to make room for the other car on my left, and I'm not sure which one of us was 'out of place' but again he hit his horn and drove up the butt of my car for the next mile and a half.
I'm so confused. I don't know if I am genuinely a shit driver, or if I've just had a bad long, first journey. I did four hours of driving today and I've never done more than an hour. I'm a careful driver and have never had any issues before.
If I did make any mistakes today I've definitely learnt from them. But I'm still very shaken and feel like I shouldn't even be on the roads.
Do I sound like a shit driver? Or was this expected of a four hour journey, newish driver, DH being a pressuring bastard, never been on motorways before?
I have to make the same journey again next week. Do I go for it or do I just not try again?