Marsden Mackem
Winger
Slowing down as well is best advice as well, a lot of people push too hard all the time which can cause and aggravate injuries especially when increasing miles. I currently base building and just running to low heart rate withthe odd run targeting my Lactate threshold, even that though not so much at minute as my mileage is increasing each week. I try to avoid any training in the middle ground that can be a bit of a dead zone for improvement has worked for me so far although I will switch to P&D training scedule in June 18 weeks before my supposed marathon.You're probably just trying to do too much too soon. 2 miles doesn't sound a lot but if your joints aren't used to it it really is. It's really worth googling a Couch to 5K programme. That will take you from a combination of running & walking up to running a 5K without stopping in 2 or 3 months.
Something else worth considering is your shoes. How old are they & are they the right type of shoe for your gait? Normally I'd suggest getting your gait checked at a running shop but that's out of the window now so it's worth going through the shoe finder at Brooks Running