I had the same tear, it's not very pleasant! I had ongoing problems with a raw patch and although the stitiches are supposed to dissolve I had to get some parts pulled out. So it took me about 8 weeks until I wasn't in constant pain. It's still uncomfortable at times (11 weeks now), and the haemorhoids are still hanging around! If you have any particular sore spots I suggest you go to your GP, as it maybe a stitch irritating you. I also got an irritating rash on the surrounding skin and had to use nappy rash cream on this. When I went for my 6 week check with the obsetrician, he used silver nitrate to burn the raw patch, this was near the back where they put a stronger stitch in, it sounds horrible but it felt so much better after a couple of days. Also I had lochia discharge for 8 weeks or so. Carry on with the salt baths and your pelvic floor exercises. Hopefully you don't get any of the complications but I thought it might give you an idea of what to look out for, I found it really hard to find any info on tears. Although they do say it takes about 3 months to feel "normal" again. Also are you having a check up with a physio, to check your pelvic floor? They have alot of helpful tips.
Hope you feel better soon!