I completed WK6 R3 last Friday morning and had planned to do WK7 R1 on Sunday morning, but got bitten on my leg by some sort of insect in between runs. My leg became swollen and quite painful to walk on, I tried the run on Sunday morning but could only manage 5 minutes running before I had to stop as I was limping quite badly and couldn't get any rhythm going. Since then it got worse but today seems to have improved quite a bit, it is still a bit uncomfortable and I am thinking of trying to do the WK7 R1 again as I don't want to leave it too long, but I fear I may not manage it again.
How long is it okay to leave between runs before having to go back a bit and re-doing earlier runs/weeks?