I'm so sorry you're going through this, especially with 3 small children. I know it's easy for me to say but please try not to worry. HPV testing is a new thing with screening and meant to be a 'good thing' although I personally think it's causing a lot of women huge worry and anxiety. I do undertsand how scary all this can be, especially when you're not used to having abnormal results.
'High risk' HPV refers to certain strains of HPV that are known to sometimes cause cervical abnormalities. Firsty, there are around 100 types of HPV (I think) and most sexually active women will come into contact with it. In most women their immune systems will get rid of the HPV and they'll never know they had it. Even when women do have abnormalities in the majoirty these are treated and never become cancer.
Yes, HPV is common, but it's important to remember that cervical abnomalities are not cancer, they are early cell changes. Borderline changes are the mildest form of change that there is, and most of the time they return to normal. The fact your colposcopy biopsy was normal is good, it suggests that this has already happened.
I hope that this helps. If you can, try to put it to the back of your mind in between now and whenever you'll next have a smear. If you wish you can try to give your immune system the best chance of working well (ie keeping healthy, eating healthily, not smoking etc).
Take care, hope you're ok x