The poor blood supply to tendons creates a healing bottleneck
However, changes in urine alongside other symptoms like missed periods, breast tenderness, fatigue, and mild cramps can make you consider whether you might be pregnant
Always good to have a reason I have also had this happen when my folate was low , it may be worth you getting it checked I had self inject my B12 every 4 weeks for the last 20+ (cannot really remember how long accurately), and 2 months ago got a similar 'electric shock tingling' all over my body - head, face, arms, hands, legs, feet etc within a couple of minutes of injecting, which lasted about 3 seconds or so
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