Try not to look ahead... especially next week. 

You can always repeat a day or a week. 

If you feel like you can't go for 5 minutes, try jogging more slowly. 

When I was at the point you are at, someone encouraged me by telling me that once you can run a mile, you can just keep going... I'm not sure exactly how true that was, but I was like you, 3 minutes seemed like forever, 5 seemed impossible.  His encouragement gave me hope.

I had entered a 5K for my daughter's school, which was the end of week 5,  I jogged the whole thing, granted the last 1/2 mile it was more of a shuffle than a jog, but is amazing how quickly you can progress after week 3.  Just remember to keep the pace slow.  Once you get the distance you can work on speed.  (I'm still incredibly slow.)

Good luck!

Sounds like you are doing great. It's amazing what you can do when you try. Even if you don't believe you can. Honestly I've been doing the whole program with the idea that I can't do this day, but I do as much of it as I can. Half my jogs have been done with I'm going to have to quit but I can make it to that spot up ahead before I do. Then I pick another spot once I make it to the one I thought I'd be toast at and before I know it I've added minutes (up to 10 mintues) to my time when I thought I was done. I can't say it works every single time but more often than not. Today what worked for awhile was "There's a really fit guy running toward me and I'm not going to stop in front of him... Don't fall down, don't fall down, don't fall down and make him laugh any more than is going to seeing my slow jog." There were a lot of really fit guys on the hill I was attemping to jog on. I did have to walk up one hill when no one was looking, but another really fit guy (or maybe the same one for the 3rd time) came along just as I hit the top and told me what a great job I was doing which gave me willpower to run again when I thought I was toast. It is amazing how well this program works. But really don't focus on what you can't do, just what you can. Which might be what you are supposed to do that day but I'll bet just as many people who finished this program didn't ace every run as those who did. Maybe more. The trick is to just keep trying. So says the lady who is trying this for the 3rd time and just missed over 4 weeks on this 3rd attempt.

I've been stalled at W3 and putting off jumping up to W4 for a couple weeks now.  One issue is that I can't help but look at the plan and realize you are almost doubling the running from W3 which is already bad enough (for me anyway).  Another issue is where I'm running.  I am at Bagram AF in Afghanistan sitting up around 5,000-ft elevation.  I just got back from a week of emergency leave at home in Cincinnati where the elevation is 500-ft.  I had actually completed W3D3 just before I left here and I fully intended to keep working on my running while I was home, but there was just so much going on that it didn't happen.  So, not only am I starting again after being off for 10 days, I am also dealing with a 4,500-ft change in elevation.  I started W3 over again and tomorrow is W3D3 so I'll do that, take my two days off and then do like everyone else is doing and move up to W4 and just do what I can and keep doing it until I can do all three days of W4.

Like a lot of people I look back now and feel a little silly since I just finished week 5.  You've got the best plan, it's the same way I made it through week4, of just doing it and not worrying about it.  Usually when I run I use my watch and will start the stopwatch for my runs and that way if I get to a point where I'm not sure I can finish I can see how much time I have left.  For me, it's just easier when I can see how much time I have left and know I only have to push myself for X number of minutes/seconds.