My main problem so far with peri is the irregular/heavy periods. Over the last few years I've had times when I've gone a couple of months without a period, then they'll be regular again.
Over Christmas and New Year I had the worst period I'd had for a very long time. It went on for two weeks and was very heavy. In hindsight I should have probably visited the Dr but kept hoping it would stop. I spent several days on the sofa, if I got up my heart would pound and I had no energy.
I've often suffered with anaemia over the years so started taking iron tablets fairly quickly but found some other advice online to help me feel better. The first was to take ibuprofen, which is supposed to lessen the flow (not sure if this worked but my period did stop a day or so after starting to take it) and to drink more fluids and eat salty foods to replace the fluid and salts lost in the heavy period.
My main worry is that I'll have another period quickly but I'm hoping it may be months before I have another. I'm due a smear test but I'm unsure when to book it for because I have no idea what my cycle is going to do next!
Another problem, which doing a search on is how I found this site, is a lot of clear discharge throughout the month. Its not irritating or anything and is more an annoyance than anything.